CN110836963A - Method and device for measuring quality of emerald finished product - Google Patents
Method and device for measuring quality of emerald finished product Download PDFInfo
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- CN110836963A CN110836963A CN201810943745.XA CN201810943745A CN110836963A CN 110836963 A CN110836963 A CN 110836963A CN 201810943745 A CN201810943745 A CN 201810943745A CN 110836963 A CN110836963 A CN 110836963A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/38—Concrete; ceramics; glass; bricks
- G01N33/381—Concrete; ceramics; glass; bricks precious stones; pearls
Abstract
The invention discloses a method for measuring the quality of an emerald finished product, which comprises the following steps: receiving an emerald selected by a user and to be measured, and determining the shape of the emerald to be measured; if the gemstone to be measured is selected as a facet gemstone, describing and measuring the length, width and area of the orthographic projection of the front surface of the gemstone, and further calculating to obtain the mass of the gemstone, wherein the front surface of the gemstone is a set of all surfaces seen when the table surface of the gemstone is vertically observed; if the gemstone to be measured is selected as a plain gemstone, the length, width and area of the orthographic projection of the front surface of the gemstone are described and measured, and then the mass of the gemstone is calculated, wherein the front surface of the gemstone is the cambered surface of the gemstone. The method solves the limitation that the measurement of the quality of the emerald in the traditional technology only depends on a weighing tool, solves the problem that the inlaid emerald cannot be weighed, and has the advantages of wide application, easy use, high efficiency and flexibility. The invention also discloses a device for measuring the quality of the emerald finished product.
Description
Technical Field
The invention relates to the technical field of test and measurement, in particular to a method and a device for measuring the quality of an emerald finished product.
Background
In the prior art, the quality of the emerald finished product is measured by using weighing tools such as an electronic scale, and the measuring unit is carat or gram; or calculating the weight thereof by a volume method; or to estimate its quality empirically.
The defects of the traditional method for measuring the quality of the emerald are as follows: tools such as an electronic scale are needed, and the weighing tool is inconvenient to carry; the emerald already inlaid on the jewelry cannot measure the specific quality of the jewelry; if only the quality is estimated, only experience can be relied on, and not all people have the estimation experience; if the mass is calculated by calculating the volume and combining the density of the substance, the data of the depth of the gem is necessary, and the real emerald finished product is out of the weight-keeping principle, the cut is not standard, and the depth of the gem cannot be accurately calculated even if the gem exists; finally, any method cannot realize the operation of measuring the quality of the emerald only by using daily used digital equipment.
Disclosure of Invention
Therefore, it is necessary to provide a method and a device for measuring the quality of emerald, which can solve the limitations of the application scenarios of measuring and calculating the quality of emerald in the conventional technology, effectively reduce the error of estimating the emerald, measure the quality of emerald by digital equipment, and have the advantages of wide application, easy use, high efficiency and flexibility.
In a first aspect, embodiments of the present invention provide a method of measuring the quality of an emerald finished product, the method comprising: receiving an emerald selected by a user and to be measured, and determining the shape of the emerald to be measured; if the gemstone to be measured is selected as a facet gemstone, describing and measuring the length, width and area of the orthographic projection of the front surface of the gemstone, and further calculating to obtain the gemstone quality, wherein the outer surface of the facet gemstone mainly comprises a plurality of geometrical surfaces, the front surface of the gemstone is a set of all surfaces seen when the table of the gemstone is observed vertically, and the projection surface is parallel to the table of the gemstone; if the gemstone to be measured is selected as a plain gemstone, the length, the width and the area of the orthographic projection of the front surface of the gemstone are described and measured, and then the quality of the gemstone is calculated, wherein the outer surface of the plain gemstone mainly comprises a raised cambered surface and a relatively flat bottom surface, the front surface of the gemstone is the cambered surface of the gemstone, and the projection surface is parallel to the bottom surface of the gemstone.
In one embodiment, the shape of the orthographic projection of the front face of the gemstone comprises: round, drop, square; wherein, the round type means that the orthographic projection of the front surface of the gem is approximately in a perfect circle or an ellipse; the water drop type refers to that the orthographic projection of the front surface of the gem is approximately in a water drop shape or a horse eye shape, namely, the projection graph has one or two inner angles less than 180 degrees, generally, the gem with one inner angle is called in a water drop shape or a pear shape, and the gem with two symmetrical inner angles is called in an olive shape or a horse eye shape; the square type means that the orthographic projection of the front face of the gem is approximately rectangular or square.
In one embodiment, if the gemstone to be measured is selected as a faceted gemstone and the shape of the gemstone to be measured is determined to be of the circular type, the water-drop type, or the square type, then the length of the longest axis of symmetry of the orthographic projection of the front surface of the gemstone to be measured is set as gemstone length L, while on the orthographic projection of the front surface of the gemstone, the maximum value of the diameter length perpendicular to this axis of symmetry is set as gemstone width W, wherein gemstone length and width are both measured in millimeters.
In one embodiment, if the gemstone to be measured is selected to be a plain gemstone and the shape of the gemstone to be measured is determined to be of the circular or drop type, the length of the longest axis of symmetry of the orthographic projection of the front face of the gemstone to be measured is set as gemstone length L, while on the orthographic projection of the front face of the gemstone, the maximum value of the diameter length perpendicular to this axis of symmetry is set as gemstone width W, wherein gemstone length and width are both measured in millimeters.
In one embodiment, the method further comprises the steps of copying the orthographic projection of the front face of the emerald gemstone according to an original value ratio of 1:1 by using a digital device, so that the orthographic projection shape of the front face of the gemstone is matched with the predefined shape of the gemstone, and the area S of the orthographic projection of the front face of the gemstone is conveniently measured, wherein the area S of the orthographic projection of the front face of the gemstone is measured in square millimeters, and the digital device is a mobile phone, a tablet computer or a smart device with a liquid crystal display screen.
In one embodiment, after the orthographic projection of the front face of the diamond of the facet diamond of the round type, the drop type or the square type is reproduced and displayed by a digital device, the length L, the width W and the area S of the orthographic projection of the front face of the diamond can be measured, and the mass M of the diamond can be calculated according to a formula M = sxwf, wherein the measurement unit of M is carat, f is a series constant developed according to the conventional facet emerald on the market, the derivation method of the f value is based on a cone volume formula and needs to be combined with the actual situation of cutting and processing of the emerald, and the digital device is a mobile phone, a tablet personal computer or an intelligent device with a liquid crystal display screen.
In one embodiment, after the circular or droplet-shaped plain gemstone is reproduced and displayed by a digital device, the gemstone length L, the gemstone width W, and the area S of the orthographic projection of the gemstone front can be obtained, and then the mass M of the gemstone is calculated according to the formula M = sxwf, wherein the M is measured in carat, f is a series constant independently developed according to the conventional plain emerald gemstone on the market, and the derivation method of the f value is based on the hemisphere volume formula and needs to be combined with the actual cutting and processing conditions of the emerald gemstone, wherein the digital device is a mobile phone, a tablet computer, or an intelligent device with a liquid crystal display screen.
In one embodiment, wherein the emerald to be measured comprises: the three-dimensional model comprises any one of a facet square type, a facet circular type, a facet drop type, a plain surface circular type and a plain surface drop type, wherein the facet square type comprises two shape types of an octagonal cutting shape and a pillow cutting shape, the facet drop type comprises two shape types of a facet drop type and a facet horse eye type, and the plain surface drop type comprises two shape types of a plain surface drop type and a plain surface horse eye type.
In one embodiment, different f values are selected for emerald stones of different shapes and varieties; if the ratio of the width W to the length L of the emerald stones in the same shape and type is different, the selected f value may also be different; f value is at least required to be accurate to 7 bits after decimal point; the f-value of the emerald at the present market can be listed as a constant, although it can be combined with other methods such as function, regression analysis, etc., and can be modified according to the actual conditions of the emerald production area, quality, and market production, cutting of the emerald finished product:
it is noted that emerald stones with an aspect ratio greater than 1 tend to be shaped stones and are not within the scope of the present invention.
In a second aspect, embodiments of the present invention provide a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the method of measuring the quality of an emerald gemstone of the first aspect described above.
In a third aspect, an embodiment of the present invention provides a computer program product containing instructions, which when run on a computer, causes the computer to perform the method according to the first aspect.
In a fourth aspect, embodiments of the present invention provide an apparatus for measuring an emerald, the apparatus comprising: the receiving module is used for receiving the emerald to be measured selected by the user; a shape determination module for determining the shape of the emerald to be measured; the first measuring module is used for describing and measuring the length, width and area of the orthographic projection of the front surface of the gem if the gem to be measured is selected as the facet gem, and further calculating to obtain the gem quality, wherein the outer surface of the facet gem mainly comprises a plurality of geometrical surfaces, the front surface of the gem is a set of all surfaces seen when the table surface of the gem is observed vertically, and the projection surface is parallel to the table surface of the gem; and if the selected gemstone to be measured is a plain gemstone, describing and measuring the length, width and area of the orthographic projection of the front surface of the gemstone, and further calculating to obtain the quality of the gemstone, wherein the outer surface of the plain gemstone mainly comprises a raised cambered surface and a relatively flat bottom surface, the front surface of the gemstone is the cambered surface of the gemstone, and the projection surface is parallel to the bottom surface of the gemstone.
The method and the device for measuring the quality of the emerald finished product provided by the invention receive the emerald to be measured selected by a user and determine the shape of the emerald to be measured; if the gemstone to be measured is selected as a facet gemstone, describing and measuring the length, width and area of the orthographic projection of the front surface of the gemstone, and further calculating to obtain the gemstone quality, wherein the outer surface of the facet gemstone mainly comprises a plurality of geometrical surfaces, the front surface of the gemstone is a set of all surfaces seen when the table of the gemstone is observed vertically, and the projection surface is parallel to the table of the gemstone; if the gemstone to be measured is selected as a plain gemstone, the length, the width and the area of the orthographic projection of the front surface of the gemstone are described and measured, and then the quality of the gemstone is calculated, wherein the outer surface of the plain gemstone mainly comprises a raised cambered surface and a relatively flat bottom surface, the front surface of the gemstone is the cambered surface of the gemstone, and the projection surface is parallel to the bottom surface of the gemstone. The method solves the limitation that the measurement of the quality of the emerald in the traditional technology only depends on a weighing tool, solves the problem that the embedded emerald cannot be weighed, finishes the measurement of the quality of the emerald finished product through digital equipment, and has wide application, easy use, high efficiency and flexibility.
Drawings
FIG. 1 is a schematic flow chart of a method of measuring the quality of an emerald final product in accordance with one embodiment of the present invention;
FIG. 2(a) (b) is a diagram illustrating an example of the application of a method of measuring the quality of an emerald final product in one embodiment of the invention; and
FIG. 3 is a schematic view showing the construction of an apparatus for measuring the quality of a final emerald of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the method and apparatus for measuring the quality of the emerald final product of the present invention are described in further detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Fig. 1 is a schematic flow chart of a method for measuring the quality of an emerald final product in one embodiment. The method specifically comprises the following steps:
step 102, receiving an emerald gemstone to be measured selected by a user and determining the shape of the gemstone to be measured. The emerald is to be measured and comprises any one type of a facet square type, a facet circular type, a facet drop type, a plain surface circular type and a plain surface drop type, wherein the facet square type comprises subclasses of two types of shapes including an octagonal cutting shape and a pillow cutting shape, the facet circular type comprises subclasses of one type of the round shape of a facet, the facet drop type comprises subclasses of two types of the shapes including a facet drop type and a facet horse eye shape, the plain surface circular type comprises subclasses of one type of the round shape of a plain surface, and the plain surface drop type comprises subclasses of two types of the shapes including a plain surface drop type and a plain horse eye shape.
In this embodiment, the orthographic projection shape of the emerald front face includes: round, drop-shaped, square. Wherein, the round type means that the orthographic projection of the front surface of the gem is approximately in a perfect circle or an ellipse; the water drop type refers to that the orthographic projection of the front surface of the gem is approximately in a water drop shape or a horse eye shape, namely, the projection graph has one or two inner angles less than 180 degrees, generally, the gem with one inner angle is called in a water drop shape or a pear shape, and the gem with two symmetrical inner angles is called in an olive shape or a horse eye shape; the square type means that the orthographic projection of the front face of the gem is approximately rectangular or square.
Further, in one embodiment, the front orthographic projection of the gemstone to be measured is matched to a predefined shape of the gemstone.
And 104, if the gemstone to be measured is selected as the facet gemstone, describing and measuring the length, width and area of the orthographic projection of the front surface of the gemstone, and further calculating to obtain the mass of the gemstone, wherein the front surface of the gemstone is a set of all surfaces seen when the table of the gemstone is observed vertically.
And 106, if the gemstone to be measured is selected to be a plain gemstone, describing and measuring the length, width and area of the orthographic projection of the front surface of the gemstone, and further calculating to obtain the quality of the gemstone, wherein the front surface of the gemstone is the cambered surface of the gemstone.
In the present embodiment, if the gemstone to be measured is selected as a facet gemstone and the shape of the gemstone to be measured is determined to be a circle, a drop, or a square, the length of the longest axis of symmetry of the orthographic projection of the front surface of the gemstone to be measured is set as the gemstone length L, and the maximum value of the diameter length perpendicular to this axis of symmetry on the orthographic projection of the front surface of the gemstone is set as the gemstone width W, wherein the gemstone length and width are measured in millimeters. The orthographic projection of the front face of the round facet gemstone, the water drop facet gemstone and the square facet gemstone can be copied and displayed by a digital device, the length L, the width W and the orthographic projection area S of the front face of the gemstone can be measured, and the mass M of the gemstone can be calculated according to a formula M = S multiplied by W multiplied by f, wherein the measuring unit of M is carat, f is a series constant developed according to the conventional facet emerald in the market, the derivation method of the f value is based on a cone volume formula and needs to be combined with the actual cutting and processing conditions of the emerald, and the digital device is a mobile phone, a tablet personal computer or an intelligent device with a liquid crystal display screen.
Further, if the gemstone to be measured is selected as a plain gemstone, and the shape of the gemstone to be measured is determined to be of the circular type or the drop type, the length of the longest symmetry axis of the orthographic projection of the front face of the gemstone to be measured is set as the gemstone length L, while on the orthographic projection of the front face of the gemstone, the maximum value of the diameter length perpendicular to this symmetry axis is set as the gemstone width W, wherein the gemstone length and width are both measured in millimeters. The orthographic projection of the front face of the gem of the circular or water-drop-shaped plain gem can be copied and displayed by digital equipment, the length L, the width W and the orthographic projection area S of the front face of the gem can be obtained, and the mass M of the gem is obtained by calculating according to a formula M = S multiplied by W multiplied by f, wherein the measuring unit of M is carat, f is a series constant which is independently developed according to the conventional plain emerald on the market, and the derivation method of the f value is based on a hemispheroid volume formula and needs to be combined with the actual conditions of cutting and processing of the emerald, wherein the digital equipment is a mobile phone, a tablet personal computer or intelligent equipment with a liquid crystal display screen.
It is to be noted that the f values selected for emerald stones of different shapes and varieties are different; if the ratio of the width W to the length L of the emerald stones in the same shape and type is different, the selected f value may also be different; the f-value needs to be accurate to at least 7 bits after the decimal point.
It can be appreciated that the measurement result for the user is displayed in carat units, and can be stored in real time, so that the user can search as required, and the method has the convenience of searching. In addition, the result of the measurement completed by the user is uploaded to the server, the server is combined with the result of the measurement completed by the user according to other data such as the Clar brand price in the emerald gemstone market pre-stored in the database, and finally, other value-added services such as weight estimation and price estimation of the gemstone are completed by the digital equipment, so that the method has the expansibility of the invention.
The invention provides a method for measuring the quality of an emerald finished product, which receives an emerald to be measured selected by a user and determines the shape of the emerald to be measured; if the gemstone to be measured is selected as a facet gemstone, describing and measuring the length, width and area of the orthographic projection of the front surface of the gemstone, and further calculating to obtain the gemstone quality, wherein the outer surface of the facet gemstone mainly comprises a plurality of geometrical surfaces, the front surface of the gemstone is a set of all surfaces seen when the table of the gemstone is observed vertically, and the projection surface is parallel to the table of the gemstone; if the gemstone to be measured is selected as a plain gemstone, the length, the width and the area of the orthographic projection of the front surface of the gemstone are described and measured, and then the quality of the gemstone is calculated, wherein the outer surface of the plain gemstone mainly comprises a raised cambered surface and a relatively flat bottom surface, the front surface of the gemstone is the cambered surface of the gemstone, and the projection surface is parallel to the bottom surface of the gemstone. The method solves the limitation that the measurement of the quality of the emerald in the traditional technology only depends on a weighing tool, solves the problem that the inlaid emerald cannot be weighed, and has the advantages of wide application, easy use, high efficiency and flexibility.
In order to more clearly understand and apply the method for measuring the quality of the emerald finished product proposed by the present invention, the following example is carried out. It should be noted that the scope of the present invention is not limited to the following examples.
FIG. 2(a) is a diagram showing an example of the application of a method for measuring the quality of an emerald final product in one embodiment of the invention; fig. 2(b) is a diagram showing an example of application of a method for measuring the quality of an emerald final product in another embodiment of the present invention. Fig. 2(a) and 2(b) are combined.
Specifically, it is determined whether the shape of the emerald to be measured is a plain face or a facet. Wherein the emerald to be measured comprises: the three-dimensional model comprises a facet square type, a facet circular type, a facet drop type, a plain surface circular type and a plain surface drop type, wherein the facet square type comprises two subclasses of octagonal cutting type and pillow cutting type, the facet circular type comprises one subclass of one shape of facet circle, the facet drop type comprises two subclasses of facet drop type and plain surface horse eye type, the plain surface circle comprises one subclass of shape of plain surface circle, and the plain surface drop type comprises two subclasses of shape of plain surface drop type and plain surface horse eye type; after a specific shape type is selected, the orthographic projection of the front surface of the emerald finished product is copied and presented by digital equipment according to the original value ratio of 1: 1. The invention divides the orthographic projection shape of the front surface of the emerald finished product into three types: round, drop-shaped, square.
It is to be noted that according to the actual shape of the emerald finished product, the plain emerald does not contain a square; in addition, there are fewer instances of the shaped emerald that are temporarily outside the measurement range of the present invention because they are not commercially available as a finished emerald product on the market, and have fewer samples.
After the shape of a specific gemstone is determined, the orthographic projection of the front face of the round, drop and square faceted gemstones is copied and displayed by a digital device, and then the length L of the gemstone, the width W of the gemstone and the area S of the orthographic projection of the front face of the gemstone can be measured. As shown in fig. 2 (a). And copying and presenting the orthographic projection of the front face of the gem of the plain gem of the circular or water drop shape by digital equipment to obtain the length L of the gem, the width W of the gem and the orthographic projection area S of the front face of the gem. As shown in fig. 2 (b). It should be noted that the digital device may automatically analyze basic parameters such as the length L of the gemstone, the width W of the gemstone, and the area S of the orthographic projection of the front surface of the gemstone, and automatically calculate a value of the width-to-length ratio, i.e., W/L, wherein the digital device is a mobile phone, a tablet computer, or an intelligent device with a liquid crystal display.
Further, the digital equipment calculates the mass M of the gem according to a formula M = S multiplied by W multiplied by f, wherein the measuring unit of M is carat, f is a series constant developed according to the emerald finished product on the market, and it needs to be explained that the selected f values of the emerald of different shapes and types are different; if the ratio of the width W to the length L of the emerald stones in the same shape and type is different, the selected f value may also be different; f value is at least required to be accurate to 7 bits after decimal point; the digital equipment is a mobile phone, a tablet personal computer or intelligent equipment with a liquid crystal display screen.
In conclusion, the method for measuring the quality of the emerald finished product provided by the invention has the advantages that as the measured emerald finished product is likely to be embedded and cannot be weighed, the invention thus avoids the acquisition of gemstone depth data, requires only the replication of the orthographic projection shape representing the front of the emerald to be measured, the f values of emerald stones with different appearances are selected in a mode of obtaining basic data, the research and development of the f values fully consider the requirements of the physical properties and cutting specifications of the stones, and the f value is fully corrected by using high-quality emerald data on the market, the operation improves the measurement applicability and the measurement precision as much as possible, and the f value can be combined with other methods such as function, regression analysis and the like, and can be corrected according to the production area and quality of the emerald and the actual conditions of market production, cutting and selling of the emerald finished products.
Based on the same inventive concept, the invention also provides a device for measuring the quality of the emerald finished product. Because the principle of solving the problems of the device is similar to that of the method for measuring the quality of the emerald finished product, the device can be implemented according to the specific steps and time limits of the method, and repeated parts are not repeated.
Fig. 3 is a schematic structural view of an apparatus for measuring the quality of an emerald final product in one embodiment. This measure device 10 of ring hand cun includes: a selection module 200, a shape determination module 400, a first measurement module 600, and a second measurement module 800.
The receiving module 200 is used for receiving a user-selected emerald finished product to be measured; a shape determining module 400 for determining the shape of the emerald finished product to be measured; the first measuring module 600 is used for measuring the length L, the width W and the area S of the orthographic projection of the front surface of the gem of the round, water drop and square facet gems after the orthographic projection of the front surface of the gem is reproduced and displayed by digital equipment, and then calculating the mass M of the gem according to the formula M = S multiplied by W multiplied by f, wherein the measuring unit of M is carat, and f is a series constant developed according to the conventional facet emerald gem on the market; the second measuring module 800 is used for obtaining the length L, the width W and the area S of the orthographic projection of the front face of the gem of the circular and droplet-shaped plain gemstones after the orthographic projection of the front face of the gem is reproduced and displayed by digital equipment, and then calculating the mass M of the gem according to the formula M = S × W × f, wherein the measuring unit of M is carat, and f is a series of constants which are independently developed according to the conventional plain emerald gem in the market.
The invention provides a device for measuring the quality of an emerald finished product, which comprises a receiving module 200 for receiving the emerald finished product to be measured selected by a user, and a shape determining module 400 for determining the specific shape of the emerald finished product to be measured; then, the first measurement module 600 determines that if the gemstone to be measured is selected as a facet gemstone, the length, width and area of the orthographic projection of the front surface of the gemstone are described and measured, and the gemstone quality is calculated, wherein the front surface of the gemstone is a set of all surfaces seen when the table of the gemstone is observed vertically; and then the second measurement module 800 determines that if the gemstone to be measured is selected as a plain gemstone, the length, width and area of the orthographic projection of the front surface of the gemstone are described and measured, and the mass of the gemstone is calculated, wherein the front surface of the gemstone is the cambered surface of the gemstone. The device solves the limitation that the measurement of the quality of the emerald in the traditional technology only depends on a weighing tool, solves the problem that the inlaid emerald cannot be weighed, and has the advantages of wide application, easy use, high efficiency and flexibility.
The embodiment of the invention also provides a computer readable storage medium. The computer-readable storage medium has stored thereon a computer program, which is executed by the processor of fig. 1 or 2.
The embodiment of the invention also provides a computer program product containing the instruction. Which when run on a computer causes the computer to perform the method of fig. 1 or 2 as described above.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A method of measuring the quality of an emerald finished product, the method comprising:
receiving an emerald selected by a user and to be measured, and determining the shape of the emerald to be measured;
if the gemstone to be measured is selected as a facet gemstone, describing and measuring the length, width and area of the orthographic projection of the front surface of the gemstone, and further calculating to obtain the gemstone quality, wherein the outer surface of the facet gemstone mainly comprises a plurality of geometrical surfaces, the front surface of the gemstone is a set of all surfaces seen when the table of the gemstone is observed vertically, and the projection surface is parallel to the table of the gemstone;
if the gemstone to be measured is selected as a plain gemstone, the length, the width and the area of the orthographic projection of the front surface of the gemstone are described and measured, and then the quality of the gemstone is calculated, wherein the outer surface of the plain gemstone mainly comprises a raised cambered surface and a relatively flat bottom surface, the front surface of the gemstone is the cambered surface of the gemstone, and the projection surface is parallel to the bottom surface of the gemstone.
2. The method of claim 1, wherein the shape of the orthographic projection of the gemstone front comprises: round, drop, square;
wherein, the round type means that the orthographic projection of the front surface of the gem is approximately in a perfect circle or an ellipse;
the water drop type refers to that the orthographic projection of the front surface of the gem is approximately in a water drop shape or a horse eye shape, namely, the projection graph has one or two inner angles less than 180 degrees, generally, the gem with one inner angle is called in a water drop shape or a pear shape, and the gem with two symmetrical inner angles is called in an olive shape or a horse eye shape;
the square type means that the orthographic projection of the front face of the gem is approximately rectangular or square.
3. The method according to any one of claims 1 to 2, wherein if the gemstone to be measured is selected as a faceted gemstone and the shape of the gemstone to be measured is determined to be of the circular type, the drop type, the square type, the length of the longest symmetry axis of the orthographic projection of the front surface of the gemstone to be measured is set as gemstone length L, while on the orthographic projection of the front surface of the gemstone the maximum value of the diameter length perpendicular to this symmetry axis is set as gemstone width W, wherein gemstone length and width are both measured in millimeters.
4. The method according to any one of claims 1 to 2, wherein if the gemstone to be measured is selected to be a plain gemstone, and the shape of the gemstone to be measured is determined to be of the circular or drop type, the length of the longest axis of symmetry of the orthographic projection of the front face of the gemstone to be measured is set as gemstone length L, while on the orthographic projection of the front face of the gemstone, the maximum value of the diameter length perpendicular to this axis of symmetry is set as gemstone width W, wherein gemstone length and width are both measured in millimeters.
5. The method of claim 1, further comprising replicating the orthographic projection of the emerald front face in an original ratio of 1:1 with a digital device, such as a cell phone, tablet computer or smart device having a liquid crystal display, to match the orthographic projection shape of the front face of the emerald to a predefined shape of the gemstone and facilitate measurement of the orthographic projected area S of the front face of the gemstone, wherein the orthographic projected area S of the front face of the gemstone is measured in square millimeters.
6. The method according to claims 1-5, wherein the orthographic projection of the front face of the gemstone of the faceted gemstone of the circular type, the water drop type or the square type is reproduced and presented by a digital device, and then the length L, the width W and the area S of the orthographic projection of the front face of the gemstone are measured, and then the mass M of the gemstone is calculated according to the formula M = S x W x f, wherein the M is measured in the unit of carat, f is a series constant developed according to the conventional faceted emerald gemstone on the market, and the derivation method of the f value is based on the formula of the volume of a cone and needs to be combined with the actual situation of the emerald cutting and processing, and the digital device is a mobile phone, a tablet computer or a smart device with a liquid crystal display.
7. The method as claimed in claims 1-5, wherein the orthographic projection of the front face of the gemstone of the plain gemstone of the circular or drop-shaped type is reproduced by a digital device to obtain the length L, width W and area S of the orthographic projection of the front face of the gemstone, and the mass M of the gemstone is calculated according to the formula M = S x W x f, wherein M is measured in carat, f is a series constant independently developed according to the conventional primordial emerald on the market, and the derivation method of the f value is based on a hemispheroid volume formula and needs to be combined with the actual cutting and processing of the primordial emerald, wherein the digital device is a mobile phone, a tablet computer or a smart device with a liquid crystal display screen.
8. The method of claim 1, wherein the emerald to be measured comprises: the novel water-saving lamp comprises a square facet class, a round facet class, a drop facet class, a round plain class and a drop plain class, wherein the square facet class comprises subclasses of two shapes, namely an octagonal cut shape and a pillow-shaped cut shape, the round facet class comprises subclasses of one shape, namely a round facet shape, the drop facet class comprises subclasses of two shapes, namely a drop facet shape and a horse eye shape, the round plain class comprises subclasses of one shape, namely a round plain shape, and the drop plain class comprises subclasses of two shapes, namely a drop plain shape and a horse eye shape.
9. The method according to claims 1-8, wherein different emerald stones of different shape and type are selected with different f-values; if the ratio of the width W to the length L of the emerald stones in the same shape and type is different, the selected f value may also be different; the f-value needs to be accurate to at least 7 bits after the decimal point.
10. A device for measuring the quality of an emerald, the device comprising:
the receiving module is used for receiving the emerald to be measured selected by the user;
a shape determination module for determining the shape of the emerald to be measured;
the first measuring module is used for describing and measuring the length, width and area of the orthographic projection of the front surface of the gem if the gem to be measured is selected as the facet gem, and further calculating to obtain the gem quality, wherein the outer surface of the facet gem mainly comprises a plurality of geometrical surfaces, the front surface of the gem is a set of all surfaces seen when the table surface of the gem is observed vertically, and the projection surface is parallel to the table surface of the gem;
and if the selected gemstone to be measured is a plain gemstone, describing and measuring the length, width and area of the orthographic projection of the front surface of the gemstone, and further calculating to obtain the quality of the gemstone, wherein the outer surface of the plain gemstone mainly comprises a raised cambered surface and a relatively flat bottom surface, the front surface of the gemstone is the cambered surface of the gemstone, and the projection surface is parallel to the bottom surface of the gemstone.
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