JP2012200574A - Decoration material, ornament and method for manufacturing decoration material containing calcium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it difficult to lose a value as a decoration material while containing calcium, which is an element contained in bone and so on, in a decoration material such as a gem.SOLUTION: A method for manufacturing a gem 10A containing calcium, according to the present embodiment includes: bringing calcium material powder 20 containing calcium as impurity into contact with preprocessed gem 10 containing no calcium; and baking them at temperatures (centigrade conversion) lower than the melting point of the preprocessed gem 10 but equal to or 30% higher than the melting point while they are in contact with each other, thereby making the calcium to permeate the preprocessed gem 10 from the surface thereof.

Description

  The present invention relates to a decorative material containing calcium.

  Legally and environmentally hygienic, dead people are incinerated by cremation. And the remains left after incineration are generally buried in the grave. The deceased's relatives often visit the grave in memory of the deceased, but if the grave is not near the residence, the grave cannot be visited frequently. For this reason, some people put a part of their remains in an urn and store them at their altar. In recent years, a technique has been developed in which a part of the remains is processed into a decorative article so that it does not feel uncomfortable even if it is stored indoors or carried. For example, as described in Patent Document 1, a technique for mixing and crystallizing remains and ore as described in Patent Document 1, as shown in Patent Document 2, as shown in Patent Document 2, remains as an intermediate layer sandwiched between two artificial crystals. For example, there is a technology to produce an embedded decorative crystal tablet. Moreover, if the remains are melted and crystallized as they are, a multiphase substance containing hydroxyapatite is only produced.

JP-T-2002-517373 JP 2007-152075 A

  The crystal produced by the technique described in Patent Document 1 is low in transparency and low in hardness due to the nature of the remains component, that is, the crystal mainly composed of calcium phosphate. Moreover, in the crystal tablet manufactured by the technique described in Patent Document 2, an intermediate layer into which ashes are mixed is sandwiched between two artificial crystals. By using sapphire or ruby as the artificial crystal, it is possible to make the structure difficult to break. On the other hand, the intermediate layer to be sandwiched is made of glass. Moreover, it may be difficult to increase transparency due to the presence of an intermediate layer mixed with ashes. In any case, the finally obtained crystal and crystal tablet not only have a low value as a gemstone, but also may not withstand long-term storage.

  An object of the present invention is to make calcium, which is an element contained in bones, contained in a decorative material such as a jewel, while making it difficult to lose its value as a decorative material.

  In order to solve the above-described problems, the present invention provides a decorative material containing calcium as an impurity, the decorative material having a region in which the concentration of calcium increases as the surface is closer to the surface of the decorative material. provide.

  In another preferred embodiment, the calcium is distributed over the entire surface.

  In another preferred embodiment, the region is transmissive to light having at least a part of wavelengths included in visible light.

  In another preferred embodiment, the calcium is contained in the region at a concentration detectable by nondestructive analysis from the surface.

  In another preferred embodiment, the analysis is a fluorescent X-ray analysis.

  The present invention also provides a decorative article comprising the decorative material described above and a support member that supports the decorative material.

  Further, the present invention is a method for producing a decorative material containing calcium as an impurity, the contacting step of contacting a calcium material containing calcium and a crystalline decorative material, and the state of contact with the calcium material The crystalline decorative material is calcined at a temperature lower than the melting point (Celsius conversion) of the crystalline decorative material and 30% or more of the melting point (Celsius conversion), thereby containing the calcium in the crystalline decorative material There is provided a method for producing a decorative material containing calcium, comprising a firing step.

  Further, the present invention is a method for producing a decorative material containing calcium as an impurity, a contact step of contacting a calcium material containing calcium and an amorphous decorative material, and a state of contact with the calcium material The amorphous decoration material is baked at a temperature higher than 70% of the softening point (degrees Celsius) of the amorphous decoration material so that the shape of the amorphous decoration material can be maintained. There is provided a method for producing a decorative material containing calcium, comprising a firing step of containing the calcium in a quality decorative material.

  Further, in another preferred embodiment, a method for producing a decorative material containing calcium as an impurity, comprising: an ionization step of ionizing calcium from a calcium material containing calcium; and injecting the ionized calcium into the decorative material And an ion implantation step for containing the calcium in the decorative material.

  Moreover, in another preferable aspect, it further has a production | generation process which isolate | separates phosphorus from the calcium phosphate contained in the bone of an animal, and produces | generates calcium or a calcium compound, The said calcium material contains the said produced | generated calcium or calcium compound It is characterized by that.

  ADVANTAGE OF THE INVENTION According to this invention, the value as a decoration material can be made hard to lose, making calcium which is an element contained in a bone etc. contain in decoration materials, such as jewelry.

It is a figure explaining the manufacturing method of the jewelry containing the calcium in 1st Embodiment of this invention, and the manufacturing method of an ornament. It is a figure explaining each process in the penetration | invasion process in 1st Embodiment of this invention. It is a figure explaining the case where calcium is penetrate | invaded into the whole surface of the gem before a process by the contact method in 1st Embodiment of this invention. It is a figure explaining the ornament using the jewelry in 1st Embodiment of this invention. It is a figure which shows the fluorescence X analysis result according to the baking conditions of the jewelry in 1st Embodiment of this invention. It is a figure explaining each process in intrusion processing in a 2nd embodiment of the present invention. It is a figure explaining the case where calcium is penetrate | invaded into a part of surface of the gem before processing by the ion implantation method in 2nd Embodiment of this invention. It is a figure explaining the manufacturing method of the jewelry containing the calcium in 3rd Embodiment of this invention, and the manufacturing method of an ornament. It is a figure explaining each process in the crystallization process in 3rd Embodiment of this invention. It is a figure explaining the case where calcium is penetrate | invaded into a part of surface of the gem before processing by the contact method in the modification 1 of this invention. It is a figure explaining the case where calcium is penetrate | invaded into a part of surface of the gem before processing by the ion implantation method in the modification 1 of this invention. It is a figure explaining the case where calcium is penetrate | invaded into a part of surface of the gem before processing by the contact method in the modification 2 of this invention.

<First Embodiment>
The jewel 10A (see FIG. 3B) according to the first embodiment of the present invention is a jewel that partially includes a region containing calcium as an impurity (hereinafter referred to as an impurity region). The gemstone as a decoration material in the previous state containing calcium (pretreatment gemstone 10: see FIG. 3A) is ruby, sapphire, diamond, garnet, spinel, rutile, crystal, emerald, aquamarine, topaz, It may be a jewel composed of crystalline inorganic materials such as tourmaline and zirconia, and includes not only natural jewels but also artificially synthesized jewels. In this impurity region, the calcium concentration is higher as it is closer to the surface. In this example, calcium contained as an impurity is obtained from human bone (hereinafter simply referred to as bone). The bone is not limited to a human bone and may be an animal bone.
Hereinafter, the manufacturing method of this jewelry 10A is demonstrated.

  FIG. 1 is a diagram for explaining a method for producing a jewel 10A containing calcium and a method for producing a decorative article according to the first embodiment of the present invention. As shown in FIG. 1, the method for manufacturing the jewel 10A includes a bone firing process (step S100), a generation process (step S200), and an intrusion process (step S300). Furthermore, it becomes the manufacturing method of an ornament by performing the process of an attachment process (step S400).

  The bone firing process (step S100) is a process of extracting calcium phosphate as a main component and firing the bone into a state where it is easy to grind by firing the bone. In this step, the bone is placed in a horizontal tubular furnace and fired at 1000 ° C. for 12 hours. In firing, a gas such as air or nitrogen is flowed into the furnace at a flow rate of 1 L / min, for example. It is desirable that a filter such as activated carbon is installed in the exhaust duct of the horizontal tubular furnace. If it does in this way, an evaporant and an odor will be purified with a filter, and these outflows can be reduced. The above firing conditions and furnace atmosphere are merely examples, and any conditions may be used as long as components other than calcium phosphate contained in the bone are reduced and the bone is more easily pulverized.

In the generation step (step S200), a calcium material containing calcium oxide is generated by performing chemical treatment on the bone fired in the bone firing step (step S100). In this example, the chemical treatment is performed as follows.
First, a powder whose main component is calcium phosphate is obtained by pulverizing the calcined bone. Precipitation occurs when this powder is mixed in a 10% sulfuric acid solution. By filtering this precipitate, calcium sulfide (including calcium sulfide hydrate) is obtained. When the obtained calcium sulfide (including calcium sulfide hydrate) is fired at 1300 ° C., a calcium material mainly composed of calcium oxide is generated. In addition, said process conditions are an example, Comprising: What kind of conditions may be sufficient if a calcium material is produced | generated.

  In the intrusion process (step S300), the calcium material generated in the generation process (step S200) and the pre-intrusion gemstone (hereinafter referred to as pre-treatment gemstone 10) are brought into contact with each other to cause the pre-treatment gemstone 10 to enter calcium. It is processing. This processing method is hereinafter referred to as a contact method. The contents of the intrusion process (step S300) will be described with reference to FIG.

  FIG. 2 is a diagram illustrating each step in the intrusion process according to the first embodiment of the present invention. FIG. 3 is a diagram for explaining a case where calcium penetrates the entire surface of the pre-treatment gemstone 10 by the contact method according to the first embodiment of the present invention. FIG. 3 schematically shows a cross section of each component. The intrusion process (step S300) includes a contact process (step S311), a firing process (step S312), and an extraction process (step S313).

  The contact step (step S311) is a step of bringing the calcium material generated in the generation step (step S200) into contact with the pre-treatment jewel 10. In this example, as shown in FIG. 3 (a), the pre-treatment jewel 10 is covered with calcium material powder (hereinafter referred to as calcium material powder 20) inside a crucible 50, which is a firing container. Will be in contact. The pre-treatment jewel 10 used here is a substance that does not contain calcium, and is preliminarily cut, polished, etc., and arranged to give a beautiful appearance. In addition, although the pre-processing gem 10 shown in FIG. 3 is a polyhedron shape, a part may include a curved surface and a spherical shape may be sufficient as it.

  In the firing step (step S312), as shown in FIG. 3A, the pre-treatment gemstone 10 and the calcium material powder 20 are placed in contact with each other inside the crucible 50 and fired in a box furnace. It is a process. The temperature when firing (hereinafter, all temperatures such as melting point are in degrees Celsius) are lower than the melting point of the pre-treatment gemstone 10 and 30% or more of the melting point (that is, if the melting point is 2000 ° C.). 600 ° C. (= 2000 ° C. × 0.3) or higher, and the lower limit of temperature is more preferably 50% or higher of the melting point. What is necessary is just to adjust baking time suitably according to the kind of pre-processing jewelry 10. FIG. Moreover, what is necessary is just to determine suitably also according to the kind of the gem 10 before a process about baking atmosphere. The firing atmosphere may be, for example, nitrogen, argon, air, etc., and may be in a reduced pressure (including vacuum) state or a pressurized state. By firing in this way, the pre-treatment jewel 10 is in contact with the calcium material powder 20, that is, calcium enters the interior over a certain range from the surface, and becomes a jewel 10 A containing calcium.

  The extraction process (step S313) is a process of extracting the jewel 10A from the crucible 50 after the processing in the baking process (step S312). As shown in FIG. 3B, the jewel 10A thus taken out has an impurity region 120 containing calcium and a non-intruding region 110 not containing calcium. The impurity region 120 is distributed over the entire surface of the jewel 10 </ b> A, and the non-intrusion region 110 is located inside the impurity region 120.

  In addition, since calcium has invaded from the surface side of the jewel 10A, the boundary between the non-intruded region 110 and the impurity region 120 is not actually clear as shown in FIG. 3B. That is, since the calcium concentration gradually increases as it approaches the surface of the jewel 10A, the boundary between the non-intrusion region 110 and the impurity region 120 is a region where the calcium concentration is a certain value or less. As shown. Thus, not containing calcium in the non-intrusion region 110 indicates that the calcium is below a certain concentration. Depending on the size of the jewel 10A and the firing conditions in the firing step (step S312), there may be a region containing no calcium at the center of the non-intrusion region 110. This also applies to the following drawings.

  In the extraction process (step S313), the surface of the jewel 10A may be washed. When cleaning, it is desirable to use a cleaning liquid that dissolves the calcium material powder 20 and hardly dissolves the jewel 10A.

  It is desirable that the calcium concentration in the impurity region 120 in the jewel 10A thus obtained is a concentration that can be detected by nondestructive analysis from the surface. Nondestructive analysis includes, for example, XRF (fluorescence X-ray analysis), XPS (X-ray photoelectron spectroscopy), EDX (energy dispersive X-ray analysis), and the like. About this density | concentration, it can adjust with the baking conditions in a baking process (step S312). By making detection possible by non-destructive analysis, it can be shown that the jewel 10A contains calcium contained in the bone while maintaining the shape of the jewel 10A.

  In the impurity region 120, the optical characteristics change due to the calcium content. Therefore, by adjusting the calcium concentration in the impurity region 120 and the size (depth from the surface) of the impurity region 120 according to the firing conditions in the firing step (step S312), the color, transparency, etc. of the jewel 10A as a whole. The optical characteristics can be changed. In the extraction process (step S313), after the gem 10A is extracted, the surface may be polished to such an extent that the impurity region 120 does not disappear. At this time, it is desirable that calcium be maintained at a detectable concentration by non-destructive inspection. In this case, polishing may not be performed in advance before firing. When the polishing is performed after the calcium is intruded in this way, the depth from the surface of the impurity region 120 can be reduced, so that the optical characteristics can also be changed. This completes the description of the intrusion process (step S300).

  Returning to FIG. 1, the description will be continued. The attachment process (step S400) is a process of attaching the jewel 10A to a support member such as a pedestal to make an ornament. An example of attaching the jewel 10A in the case of a decorative article will be described with reference to FIG.

  FIG. 4 is a diagram illustrating an ornament 100A using the jewel 10A according to the first embodiment of the present invention. As shown in FIG. 4, the decorative article 100A is a ring, and includes a jewel 10A, a support member 60A that serves as a base that supports the jewel 10A, and a ring portion 70A to which the support member 60A is attached. In this way, the jewelry 10A is supported from other members, so that the decorative article 100A can be configured together with the other members. In this example, a ring is shown as an example of the ornament 100A. However, in addition to jewelry such as earrings, necklaces, bracelets, watches, and glasses, jewelry is not worn, such as table clocks, jewelry boxes, figurines, and furniture. It can be applied to any decorations such as things.

<Example>
As an example of the above, the result of the fluorescent X-ray analysis when the firing conditions in the firing step (step S312) are changed will be described. Here, blue sapphire is used as the pre-treatment jewel 10. Further, calcium oxide is used as the calcium material powder 20. Blue sapphire in contact with calcium oxide was placed on an alumina container, placed in a box-type electric furnace, and fired. Firing conditions are atmospheric pressure and air atmosphere, and firing temperatures are 1100 ° C., 1150 ° C., 1200 ° C., and 1400 ° C. The baking time is 1100 ° C., 1150 ° C., 2 hours (2Hr), 1200 ° C., 1400 ° C., 6 hours (6Hr). Note that the firing temperature is the set temperature of the apparatus, and the temperature of the blue sapphire itself may vary slightly depending on the temperature detection position in the furnace. Further, although the firing time varies depending on the firing temperature, there is almost no influence on the analysis result even if the same time is used.

FIG. 5 is a diagram showing the results of fluorescence X analysis according to the firing conditions for gemstones in the first embodiment of the present invention. FIG. 5A shows the result of X-ray fluorescence analysis of the pre-treatment gemstone 10 before firing. On the other hand, FIGS. 5B, 5 </ b> C, 5 </ b> D, and 5 </ b> E show the results of fluorescent X-ray analysis at firing temperatures of 1100 ° C., 1150 ° C., 1200 ° C., and 1400 ° C.
This X-ray fluorescence analysis uses an X-ray fluorescence analyzer (EDX5200A manufactured by SII Nanotechnology Co., Ltd.) to irradiate the surface part of the pretreatment gem 10 before firing or the gem 10A obtained after firing with X-rays for excitation. An energy dispersion type analysis was conducted. As shown in FIG. 5, at 1100 ° C. before firing, peaks (CaKα, CaKβ) indicating calcium generated in the vicinity of 3.5 to 4 eV are not generated, but peaks are generated when the temperature is 1150 ° C. or higher. is doing. From this result, it can be seen that calcium having a concentration detectable by fluorescent X-ray analysis has entered the surface portion of the pre-treatment gemstone 10.

  Since the melting point of blue sapphire is about 2000 ° C., the firing temperature 1150 ° C. at which calcium is detected is 57.5% of the melting point, and the undetected firing temperature 1100 ° C. is 55% of the melting point. As described above, the firing temperature is 30% or more, preferably 50% or more of the melting point, but this is not inconsistent with this content. That is, since this analysis result was obtained as a concentration detectable by fluorescent X-ray analysis, calcium is pre-treated at a low concentration that cannot be detected by fluorescent X-ray analysis even at a low baking temperature. 10 is invaded. Moreover, although the pressure at the time of baking is atmospheric pressure, if the pressure is changed, for example, depending on the high-pressure conditions, the concentration may be detectable by fluorescent X-ray analysis even if the baking temperature is lower. The optimum firing temperature also varies depending on the atmosphere during firing, the components contained in the calcium material powder 20, the components contained in the pre-treatment gemstone 10, and the like.

Second Embodiment
In the second embodiment, the contents of the intrusion process (step S300) are different from those in the first embodiment. Therefore, the contents of the intrusion process will be described with reference to FIGS.

  FIG. 6 is a diagram illustrating each step in the intrusion process according to the second embodiment of the present invention. FIG. 7 is a diagram illustrating a case where calcium is allowed to enter a part of the surface of the pre-treatment gemstone by the ion implantation method according to the second embodiment of the present invention. FIG. 7 schematically shows a cross section of each component. The intrusion process (step S300) in the second embodiment includes an arrangement process (step S321), an ionization process (step S322), an ion implantation process (step S323), and an extraction process (step S324).

The placement step (step S321) is a step of placing the pre-treatment jewel 10 that has been cut and polished in advance on the stage 40 of the ion implantation apparatus, as shown in FIG. 7A.
The ionization step (step S322) is a step of generating calcium ions using the calcium material generated in the generation step (step S200) in the ion implantation apparatus. The ion implantation step (step S323) is a step of electrically accelerating the generated calcium ions and injecting them into the pre-treatment jewel 10.

  The extraction process (step S324) is a process of extracting the jewel 10B obtained by the implantation of calcium ions. As shown in FIG. 7B, the gem 10 </ b> B taken out in this way is an impurity region containing calcium on the surface (surface not facing the stage 40) side where calcium ions are implanted in the surface portion. 120 and a non-intrusion region 110 not containing calcium.

  In the extraction process (step S324), the surface of the jewel 10B may be washed. Alternatively, the jewel 10B may be baked at a temperature lower than the melting point to recrystallize the region that has become amorphous due to damage due to ion implantation.

  As in the case of the first embodiment, in the impurity region 120, the optical characteristics change depending on the calcium content, the degree of amorphization, and the like. Therefore, the concentration of calcium in the impurity region 120 and the size (depth from the surface) of the impurity region 120 are determined based on the implantation conditions (calcium ion acceleration voltage, dose, stage 40 temperature) in the ion implantation step (step S323). Etc.), the optical characteristics such as the color and transparency of the jewel 10B as a whole can be changed. Depending on the acceleration voltage, calcium may not reach the maximum concentration on the outermost surface of the jewel 10B, but the concentration is lower on the inner side than the portion where the maximum concentration is reached. Thus, at least a part of the impurity region 120 has a concentration that increases as it approaches the surface.

<Third Embodiment>
In the first and second embodiments, the pre-treatment jewel 10 that does not contain calcium is made to enter calcium to constitute the jewels 10A and 10B containing calcium. In the third embodiment, in crystallization of a raw material for producing a jewel, a method of manufacturing a jewel containing calcium by mixing calcium that is an impurity with the raw material and then melting and crystallizing will be described. .

  FIG. 8 is a diagram illustrating a method for producing a calcium-containing gemstone and a method for producing a decorative article according to the third embodiment of the present invention. As shown in FIG. 3, the method for manufacturing a jewel according to the third embodiment includes a bone firing process (step S100), a generation process (step S200), and a crystallization process (step S500). Furthermore, by performing the processing step (step S600) and the attachment step (step S400), a method for manufacturing a decorative article is obtained. Since the bone firing process (step S100), the generation process (step S200), and the attachment process (step S400) in the third embodiment are the same as those in the first and second embodiments, the description thereof is omitted.

  The crystallization treatment (step S400) is a step of mixing and melting the raw material corresponding to the composition of the gemstone (hereinafter referred to as the parent material) and the calcium material generated in the generation step (step S200) to crystallize. . In this example, aluminum oxide is used as a base material, and crystallization is performed using a floating zone method (Floating Zone method). The crystallization process (step S400) will be described with reference to FIG.

FIG. 9 is a diagram illustrating each step in the crystallization process according to the third embodiment of the present invention. The crystallization process includes a mixing step (step S511), a raw material firing step (step S512), and a crystallization step (step S513).
The mixing step (step S511) is a step of mixing the calcium material generated in the generating step (step S200) and aluminum oxide using a mortar or the like. In this example, the mixing ratio of the calcium material and aluminum oxide is 0.8: 99.2 in molar ratio. This molar ratio is an example, and can be changed in various ways. However, the upper limit of the molar ratio of the calcium material needs to be within a range that can be crystallized as corundum. The lower limit of the molar ratio of the calcium material is such that the calcium contained in the corundum as an impurity can be detected by non-destructive analysis after crystallization or after being processed in the processing step (step S600) described later. It is desirable to be determined so that

  The raw material firing step (step S512) is a step in which a pressure is applied to the mixed material obtained in the mixing step (step S511) to form a rod shape, which is fired in a horizontal tubular furnace or the like. The firing conditions are preferably lower than the melting point of the base material and 30% or more of the melting point, and more preferably the lower limit of the temperature is 50% or more of the melting point. The firing time may be appropriately adjusted according to the type of the parent material. Further, the firing atmosphere may be appropriately determined according to the type of the parent material. Hereinafter, the rod-shaped and fired material is referred to as a raw material rod.

The crystallization process (step S513) is a process in which the raw material rod obtained in the raw material firing process (step S512) is melted and gradually cooled to be crystallized. In this crystallization step (step S513), as described above, the raw material rod is crystallized using the apparatus that realizes the floating zone method of condensing and heating the infrared rays emitted from the halogen lamp. In this example, when the raw material rod is crystallized, a gemstone (corundum) containing calcium as an impurity is obtained. This corundum is a light-transmitted bright yellow crystal and is an example of a gemstone.
In the mixing step (step S511), a material containing a transition metal element such as a transition metal or a transition metal compound is further mixed so that the molar ratio is in the range of 0.01% to 5% (relatively oxidized). By reducing the molar ratio of aluminum, it can be adjusted to various colors. For example, if chromium is used as the transition metal, it can be red (ruby), and if iron or titanium is used as the transition metal, it can be blue (sapphire).

  Returning to FIG. The processing step (step S600) is a step of cutting and polishing the gemstone (corundum) obtained in the crystallization step (step S513) to process it into a shape that gives aesthetics. The corundum processed in this way is supported by the support member in the mounting step (step S400) described above and becomes a decorative article.

<Modification>
As mentioned above, although embodiment of this invention and its Example were demonstrated, this invention can be implemented in various aspects as follows.
[Modification 1]
In 1st Embodiment mentioned above, although it was the structure where the impurity region 120 containing calcium exists in the whole surface of the jewelry 10A, the impurity region 120 exists in a part of surface, and the remaining part contains calcium. It may be configured not to be (or has a lower calcium concentration than the impurity region 120). In this case, in the contact step (step S311), a part of the surface of the pre-treatment gem 10 is covered with a substance that does not contain calcium (hereinafter referred to as a mask member), and is contacted with the calcium powder 20 from the surroundings. Just do it. This configuration will be described with reference to FIG.

FIG. 10 is a diagram for explaining a case where calcium is allowed to enter a part of the surface of the pre-treatment gemstone 10 by the contact method according to the first modification of the present invention. In the contact step (step S311), as shown in FIG. 10A, the mask member 30 is brought into contact with a part of the surface of the pre-treatment gemstone 10, and the calcium material powder 20 is brought into contact therewith. The mask member 30 may be any member that does not contain calcium and does not dissolve in the firing step (step S312). As shown in FIG. 10B, the jewel 10C extracted in the extraction process (step S313) has a configuration in which the impurity region 120 exists in a part of the surface and the non-intrusion region 110 exists in the other part. .
In this example, the extraction step (step S313) may further include a step of removing the mask member 30. FIG. 10B shows a case where the mask member 30 is removed, and a portion where the mask member 30 exists is indicated by a broken line. Thus, when removing the mask member 30, what is necessary is just to melt | dissolve with a chemical | medical solution. At this time, it is desirable to use a chemical solution that easily dissolves the mask member 30 and hardly dissolves the jewel 10C. That is, it is desirable that the mask member 30 is a member that is more easily dissolved in a certain chemical than the jewel 10C.

Thus, the impurity region 120 and the non-intrusion region 110 exist on the surface of the jewel 10C using the mask member 30. Therefore, when the optical characteristics of the non-intrusion area 110 and the optical characteristics of the impurity area 120 are different, these areas can be visually distinguished. Therefore, the pattern on the surface of the jewel 10C depends on the shape of the mask member 30. Can also be formed. In this case, it can be shown that the jewel 10C contains calcium contained in the bone by a visual difference depending on each region.
The method using the mask member 30 described above can be used not only in the contact method in the first embodiment but also in the ion implantation method in the second embodiment.

  FIG. 11 is a diagram illustrating a case where calcium is allowed to enter a part of the surface of the pre-treatment gemstone 10 by the ion implantation method according to the first modification of the present invention. As shown to Fig.11 (a), the mask member 30 is provided in the side by which the calcium ion of the gem 10 before a process is inject | poured. When the intrusion process by the ion implantation method is performed in this way, as shown in FIG. 11B, the jewel 10D has the impurity region 120 in a part of the surface into which ions are implanted, and the other part. In this configuration, the non-intrusion area 110 exists.

[Modification 2]
In 1st Embodiment mentioned above, although it was the structure where the impurity region 120 containing calcium exists in the whole surface of the jewelry 10A, the impurity region 120 exists in a part of surface, and the remaining part contains calcium. The structure which does not do may be sufficient. This configuration can also be realized by the method using the mask member 30 in the above-described modification example 1, but in the modification example 2, it is realized by another method that does not use the mask member 30. This method will be described with reference to FIG.

  FIG. 12 is a diagram for explaining a case where calcium enters a part of the surface of the pre-treatment jewel 10 by the contact method in the second modification of the present invention. In the contact step (step S311), as shown in FIG. 12 (a), a part of the pretreatment gem 10 is embedded in the calcium material powder 20 and a part of the surface of the pretreatment gem 10 is part of the calcium material powder 20. Contact. As shown in FIG. 12B, the jewel 10E extracted in the extraction process (step S313) has a configuration in which the impurity region 120 exists in a part of the surface and the non-intrusion region 110 exists in the other part. . In the contact step (step S311), the calcium material powder 20 may be placed on and contacted with a part of the pre-treatment jewel 10 so that the pattern is formed on the surface of the jewel 10E.

[Modification 3]
In the second embodiment described above, calcium is further penetrated into the non-intrusion region 110 side of the jewel 10B by ion implantation so that the impurity region 120 exists on the entire surface as in the jewel 10A shown in FIG. Also good.

[Modification 4]
In the first and second embodiments described above, the calcium that enters the pre-treatment gemstone 10 is bone-derived calcium contained in the bone, but calcium that is not contained in the bone (other than bone-derived). Of calcium). In other words, any calcium may be used as long as it is contained in living organisms such as animals and plants, and various other things. In this way, the present invention can also satisfy the demand to keep a memorable thing in a jewel. In addition, it can apply similarly about calcium contained in jewelry in 3rd Embodiment.

[Modification 5]
The non-intrusion region 110 in the first and second embodiments described above and the jewel obtained in the third embodiment desirably have light transmittance. Here, the term “light transmission” refers to having transparency to light having at least a part of wavelengths included in visible light. Note that the impurity region 120 is also preferably light-transmissive.

[Modification 6]
In the first and second embodiments described above, in the generation step (step S200), the calcined bone has been subjected to chemical treatment to produce calcium oxide, but other chemical treatments may be used. For example, it is the following method.
First, a powder of calcium phosphate as a main component obtained by grinding the fired bone is dissolved in a 10% citric acid solution. When ammonium carbonate is added to this solution, precipitation occurs, and calcium carbide and the like are obtained by filtration. At this time, it is desirable to keep it cold so that ammonia does not escape from ammonium carbonate due to reaction heat or the like.
When this calcium carbide is baked at 1300 ° C., a calcium material mainly composed of calcium oxide is generated. Thus, the calcium agent may be generated using other chemical treatments.

  Moreover, in a production | generation process, you may produce | generate a calcium material by another process, without using a chemical process. For example, the calcium material may be generated by electrical treatment. For example, a powder whose main component is calcium phosphate obtained by grinding fired bone is melted, and positive and negative electrodes using platinum foil or the like are inserted into the molten salt. And by flowing a direct current between electrodes and performing electrolysis, calcium and calcium oxide are deposited on the electrodes. The treatment conditions in the electrolysis may be determined according to Faraday's second law.

  Further, the generated calcium material is not limited to calcium and calcium oxide, but may be calcium carbonate.

[Modification 7]
In the first, second, and third embodiments described above, the calcium material is calcium or calcium oxide generated in the generating step (step S200). However, other materials may be used as long as they are calcium compounds. Good. For example, calcium phosphate may be used as the calcium material. In addition, the calcium material may be one obtained by pulverizing the bone fired in the bone firing step (step S100), or may be one obtained by grinding bone before firing.
Moreover, in the contact process (step S311) in the first and second embodiments, the calcium material is brought into contact with the pre-treatment gemstone 10 as a powder. It may be liquid in a state dissolved in a solvent, or may be introduced into the furnace as a firing atmosphere in the firing step (step S312) as a gas.

[Modification 8]
The pre-treatment jewel 10 in the first and second embodiments described above is a substance that does not contain calcium. However, even if it contains calcium, it may have a concentration that is not detected by non-destructive analysis such as fluorescent X-ray analysis. That's fine. Moreover, even if it is detected by such an analysis, if it is measured that the calcium concentration is increased in the pre-treatment jewel 10 and the jewels 10A and 10B, the calcium contained in the bone is included. It can be confirmed.

[Modification 9]
The pre-treatment jewel 10 in the first and second embodiments described above was a natural jewel or artificial jewel composed of a crystalline inorganic material, but an amorphous inorganic material such as glass (including crystal glass) or opal. The jewel comprised by may be sufficient. Thus, the decorative material in the present invention refers to a jewel made of a crystalline or amorphous inorganic substance. In addition, when the jewelry comprised from an amorphous inorganic substance is used, in a baking process (step S312) in 1st Embodiment, baking temperature shall be 70% or more of the softening point (Celsius conversion) of the jewelry. Is desirable. The upper limit temperature may be a temperature exceeding the softening point (in Celsius) of the jewel, and is preferably set to a temperature at which the shape of the jewel can be maintained.
In addition, the decorative material is not limited to jewels and the like, and includes a crystalline or amorphous metal compound used for decorative products. In addition, the present invention is applied to optical materials (magnesium oxide, germanium oxide, gallium oxide, sodium bromide, magnesium fluoride, lithium fluoride, boron fluoride, zinc sulfide, zinc selenide, etc.) having predetermined optical characteristics. May be. In this case, the optical characteristics may be changed depending on the extent to which calcium enters the optical material.

[Modification 10]
In the above-described third embodiment, corundum using aluminum oxide as a base material is used as an example of a gemstone, but other materials may be used. For example, the base material may have a spinel crystal structure AB ₂ O ₄ (eg, MgAl ₂ O ₄ , NiFe ₂ O _4, etc.), or a garnet crystal structure (eg, Fe ₃ Al ₂ (SiO ₄ ) ₃ , Y ₃ (CrAl ₅ ) O ₁₂ or the like) or a silicate mineral called topaz. In such a case, the mixing ratio of the calcium material and the base material may be, for example, 1:99 in molar ratio.

[Modification 11]
In 3rd Embodiment mentioned above, you may make it a calcium material distribute only to a part of raw material stick | rod. The raw material bar may be fired by bringing a calcium material into contact with the periphery of the base material processed into a bar shape.

[Modification 12]
In 3rd Embodiment mentioned above, although the jewelry was manufactured using the floating zone method, you may use another method. For example, it is desirable to use a fluxing type floating zone method (Traveling Solvent Floating Zone method). Or, usually, a method in which a crystal can be grown in the vertical direction, using a crucible, for example, a crucible descent method (Bridgman method), a vertical zone melting method, a simple pulling method (Nacken method), a downward pulling method, a rotating pulling method (Czochralski method) or the like may be used. Furthermore, a method not using a crucible, for example, a Bernoulli method (Verneuil method), a skull melt method (Skull Melt method), a pedestal (Pedestal method), an immersion arc method, or the like may be used.

DESCRIPTION OF SYMBOLS 10 ... Pre-processing jewelry, 10A, 10B, 10C, 10D, 10E ... Jewelry, 20 ... Calcium material powder, 30 ... Mask member, 40 ... Stage, 50 ... Crucible, 60A ... Support member, 70A ... Ring part, 100A ... Decoration 110, non-intrusion region, 120 ... impurity region

Claims (10)

A decorative material containing calcium as an impurity,
A decorative material, characterized in that the decorative material has a region in which the concentration of the calcium increases as the surface of the decorative material is closer. The decorative material according to claim 1, wherein the calcium is distributed over the entire surface. The decorative material according to claim 1 or 2, wherein the region is transmissive to light having at least a part of wavelengths included in visible light. The decorative material according to any one of claims 1 to 3, wherein the calcium is contained in the region at a concentration detectable by non-destructive analysis from the surface. The decorative material according to claim 4, wherein the analysis is fluorescent X-ray analysis. The decorative material according to any one of claims 1 to 5,
And a support member for supporting the decorative material. A method for producing a decorative material containing calcium as an impurity,
A contact step of contacting a calcium-containing calcium material with a crystalline decorative material;
By firing the crystalline decorative material in contact with the calcium material at a temperature lower than the melting point (Celsius conversion) of the crystalline decorative material at 30% or more of the melting point (Celsius conversion). And a calcining step of containing the calcium in a quality decorative material. A method for producing a decorative material containing calcium. A method for producing a decorative material containing calcium as an impurity,
A contact step of contacting a calcium material containing calcium with an amorphous decorative material;
The amorphous decorative material in contact with the calcium material is at a temperature higher than 70% of the softening point (in Celsius) of the amorphous decorative material and capable of maintaining the shape of the amorphous decorative material. A method for producing a calcium-containing decorative material, comprising: a step of baking to cause the amorphous decorative material to contain the calcium. A method for producing a decorative material containing calcium as an impurity,
An ionization step of ionizing calcium from a calcium material containing calcium;
A method for producing a decorative material containing calcium, comprising: an ion implantation step of causing the decorative material to contain the calcium by injecting the ionized calcium into the decorative material. Further comprising a production step of separating phosphorus from calcium phosphate contained in animal bones to produce calcium or calcium compounds;
The said calcium material contains the said produced | generated calcium or calcium compound. The manufacturing method of the decoration material containing the calcium in any one of Claim 7 thru | or 9 characterized by the above-mentioned.

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