CN111084472B

CN111084472B - Diamond with one flower and five stars inside and processing method thereof

Info

Publication number: CN111084472B
Application number: CN201911297555.6A
Authority: CN
Inventors: 李金华
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-17
Filing date: 2019-12-17
Publication date: 2021-11-16
Anticipated expiration: 2039-12-17
Also published as: CN111084472A

Abstract

A diamond with a flower and a five-pointed star inside and a processing method thereof. The invention relates to the field of jewelry, in particular to a diamond with a flower and a pentagram inside and a processing method thereof. People now want to have a diamond which can show a pentagram shape and a flower shape in the diamond under the condition of not damaging the conical shape of the diamond. The invention provides a diamond presenting a flower and a pentagram, the crown comprising: the three-dimensional kite comprises a table top, ten triangular kite surfaces, ten main crown surfaces, ten first upper waist triangular surfaces and ten second upper waist triangular surfaces; the pavilion includes: twenty first sole faces, five second sole rake faces, ten third side corner faces and ten fourth side corner faces.

Description

Diamond with one flower and five stars inside and processing method thereof

Technical Field

The invention relates to the field of jewelry, in particular to a diamond with a flower and a pentagram inside and a processing method thereof.

Background

Diamond parts:

diamond CROWN (CROWN): the upper part of the diamond, called the crown, comprises 1 TABLE (TABLE), 8 star facets (STARFACET), 8 kite facets (bezaficet) and 16 upper waist facets (UPPERGIRDLEFACET), for a total of 33 facets.

Waist circumference (GIRDLE): the widest part of the diamond is also the junction of the crown part on the upper surface of the diamond and the pavilion part under the diamond, and the waistline is the part for fixing the diamond when the jewel is inlaid.

The part under the PAVILION (PAVILION) diamond is called PAVILION, that is, the part from below the waist to the diamond tip. Comprises 16 waist planes (LOWERGERDLEFACET), 8 pavilion facets (PAVILIONFACET) and 1 bottommost base plane (CULET), and 25 facets in total; because the diamond does not necessarily have a pavilion with no pavilion, it has only 24 facets, and the total number of facets is 57.

For diamonds with the same size and cleanliness, in addition to the classic processing technique of the diamond, the cutting technique of the diamond is gradually marked by a unique cutting mode among brands. In pursuit of different sparkle types, different cutting styles present diamonds with different sparkle degrees, either more sparkling, such as brilliant, or more convergent, such as square, which look at the individual's orientation.

Two steps are essential for any diamond blank, namely 'scribing', 'valving and polishing'. The position and angle of the petals generated by a finely cut diamond are accurately calculated to maximize the brilliance of the diamond. It follows that cutting the hardest gemstone in the world, diamond, requires not only advanced equipment, but also a great deal of experience, high degree of responsibility and attention from the cutting engineer to release the full potential beauty of the diamond.

Standard round bright formula (standardroundbright):

the most common forms on the market include: 1 mesa, 8 kite facet, 8 star facet, 16 waist up facet, 16 waist down facet, 8 bottom main facet, and one sharp facet, which may or may not be present, for a total of 57 or 58 facets. Figure 1 clearly shows the specific location of the above facets of the diamond. Generally, a diamond of less than 5 carats has no point, so that the point of the Culet point on the certificate is None or Verysmall, etc., i.e. the point is None or negligibly small, i.e. 57 faces. In order to protect the diamond from damage, the large-particle diamond is generally flattened, so that one more surface, namely 58 surfaces, is provided. Many people often believe that the more facets a diamond is the better, and this is not true, and many types of gemstones are carved, especially shaped diamonds, which can extend over many facets, not all of which are the more facets the better. As a round drill, standard brilliant cuts (57-58 facets), also a classical lathe, are a very classic and perfect way of cutting.

Patent No. CN201811163063.3 entitled invention patent of a diamond structure, discloses that the crown part (1) comprises 1 table top (11) on the top surface, the table top (11) is an undecamornate, each vertex of the table top (11) is provided with a hexagonal crown main surface (13) in the direction towards the waist (3), one vertex of the crown main surface (13) is located on the waist (3), the vertex of the crown main surface (13) on the table top (11) and the vertex on the waist (3) are two symmetrical points of the hexagonal crown main surface (13), and two adjacent crown main surfaces (13) share one edge; the pavilion (2) comprises 11 pavilion main surfaces (22) sharing vertexes, the pavilion main surfaces (22) are quadrilateral, one vertex of each pavilion main surface (22) is positioned on the waist part (3), and two adjacent pavilion main surfaces (22) share one side. The patent adopts an accurate cutting process and a facet design of a crown part, so that the diamond forms a rose shape under the irradiation of light; the crown part and the pavilion part can see rose light shadows under the overlooking condition through special angle design, eleven planar rose light shadows are formed at three main light angles appearing at the joint of two adjacent crown main surfaces, the aesthetic feeling of the diamond is improved, and the using effect and the using benefit of the diamond structure are effectively guaranteed.

Disclosure of Invention

A diamond presenting a flower and a pentagram, the crown comprising: a table-board 1, ten triangle kite surfaces 13, ten main crown surfaces 12, ten first upper waist triangle surfaces 14 and ten second upper waist triangle surfaces 15; the pavilion includes: twenty first sole faces 3, five hexagonal second sole rake tip faces 31, ten pentagonal third corner faces 32 and ten pentagonal fourth corner faces 33; the first sole surface 3 and the waist reference surface form a first included angle A, and the value range of A is 40.5-40.9 degrees; the second bottom rake pointed surface 31 and the waist reference surface form a second included angle B, the value range of B is 35-39 degrees, or the length h1 of the longest diagonal line of the second bottom rake pointed surface 31 accounts for 20-40% of the length of the intersecting edge of the first bottom rake pointed surface 3 when other surfaces are not ground; the third angle surface 32 and the waist reference surface form a third included angle C, the value range of C is 43-45 degrees, or the length h2 from the point of the third angle surface 32 on the intersected edge of the first sole surface 3 to the intersected edge line of the waist accounts for 10% -30% of the length of the intersected edge of the first sole surface 3 when other surfaces are not polished; the fourth angle surface 33 and the waist reference surface form a fourth included angle D, the value range of D is 43-45 degrees, or the length h3 from the point of the fourth angle surface 33 on the intersecting edge of the first sole surface 3 to the intersecting edge line with the waist accounts for 5% -15% of the length of the intersecting edge of the first sole surface 3 when other surfaces are not polished.

A diamond presenting a flower and a pentagram therein, the crown comprising: a table-board 1, ten triangle kite surfaces 13, ten main crown surfaces 12, ten first upper waist triangle surfaces 14 and ten second upper waist triangle surfaces 15; the pavilion includes: twenty first sole faces 3, five second sole rake faces 31, ten third side corner faces 32 and ten fourth side corner faces 33; the first sole surface 3 and the waist reference surface form a first included angle A, and the value range of A is 40.5-40.9 degrees; the second bottom rake tip surface 31 and the waist reference surface form a second included angle B, the value range of B is 35-39 degrees, and the length h1 of the longest diagonal line of the second bottom rake tip surface 31 accounts for 20% -40% of the length of the intersecting edge of the first bottom rake tip surface 3 when other surfaces are not polished; the third angle surface 32 and the waist reference surface form a third included angle C, the value range of C is 43-45 degrees, and the length h2 from the point of the third angle surface 32 on the intersected edge of the first sole surface 3 to the intersected edge line of the waist accounts for 10% -30% of the length of the intersected edge of the first sole surface 3 when other surfaces are not polished; the fourth angle surface 33 and the waist reference surface form a fourth included angle D, the value range of D is 43-45 degrees, and the length h3 from the point of the fourth angle surface 33 on the intersecting edge of the first sole surface 3 to the intersecting sideline with the waist accounts for 5% -15% of the length of the intersecting edge of the first sole surface 3 when other surfaces are not polished.

As for the diamond, the main crown surface 12 and the waist reference surface form a fifth included angle E, and the value range of E is 32-36 degrees; the length h4 from the point of the triangular kite surface 13 on the intersecting edge of the main crown surface 12 to the intersecting sideline of the triangular kite surface and the table top 1 accounts for 47% -53% of the total length of the intersecting edge of the main crown surface 12 when the triangular kite surface is not polished, or the triangular kite surface 13 and the waist datum plane form a sixth included angle F, and the value range of the F is 22-30 degrees; the first upper waist triangular surface 14, the second upper waist triangular surface 15 and the waist reference surface form a seventh included angle G, and the value range of G is 40-48 degrees.

A method for processing a diamond internally presenting a flower and a pentagram, comprising the steps of:

1, cutting a table board 1, and cutting a large plane on a drill blank to be used as the table board 1;

2, cutting the waist, and polishing the waist on the drill blank;

3, cutting the pavilion, and processing the part below the waist on the drilling blank into a bottom part which is approximately conical;

4, processing a crown part, namely processing the part above the waist part on a drilling blank into a crown part similar to a frustum shape;

the step 3 comprises the following steps:

3.1 taking the plane of the waist as a reference plane, wherein the reference plane is parallel to the plane of the table board 1, twenty first bottom foot surfaces 3 are ground towards the middle lower part of the waist at a first included angle A, the twenty first bottom foot surfaces 3 are intersected at a rake point 301, and the twenty first bottom foot surfaces 3 form a twenty pyramid.

3.2 based on the intersecting edges 302 of two adjacent first foot surfaces 3, grinding a first second foot surface 31 towards the tip point by a second included angle B or according to a first preset length h1, and then grinding twenty first foot surfaces 3 into five hexagonal second foot surfaces 31 connected with each other according to the same method.

3.3 on the basis of 3.2, based on the intersected edge 302 of two adjacent first sole surfaces 3, a third triangular corner surface 32 is polished towards the waist by using a third included angle C or according to a second preset length h2, and two end 303 points of a side line of the intersection of the third corner surface 32 and the waist are respectively positioned on the edges of the left first sole surface 3 and the right first sole surface 3. And grinding the second third corner surface 32 and the third corner surface 32 on every two ridges 302 intersected with the first sole surface 3 by using a method for grinding the first third corner surface 32 until the tenth third corner surface 32 is ground.

3.4 based on 3.3, polishing a fourth corner surface 33 of the first pentagon by using a fourth included angle D or a third predetermined length h3 with the intersection point 303 of two third corner surfaces 32 as a starting point, and polishing a second fourth corner surface 33 and a third fourth corner surface 33 by using the intersection point 303 of the other two third corner surfaces 32 as a starting point until the tenth fourth corner surface 33 is finished. The third predetermined length h3 is shorter than the second predetermined length h 2. The third corner surface 32 is now pentagonal due to the grinding of the fourth corner surface 33.

The step 4 comprises the following steps:

4.1 the crown is rotated to be opposite to the second base rake pointed surface 31 of the rhombus at the bottom, and the transition pentagonal table-board 1 and five main crown surfaces 12 are ground in the direction of the waist by a fifth included angle E. Then, based on the intersected edges 101 of two adjacent main crown surfaces 12, the transitional decagon table board 1 and ten main crown surfaces 12 are ground towards the waist direction by using a fifth included angle E.

4.2 based on the edge 101 where the two adjacent main crown surfaces 12 intersect, a first triangular kite surface 13 is ground in the direction of the table top 1 by using a sixth included angle F or a fourth preset length h4, and two end points 104 of a borderline where the table top 1 and the first triangular kite surface 13 intersect are respectively located at the central positions of the borderlines where the two main crown surfaces 12 and the table top 1 intersect when not being ground. And grinding a second triangular kite surface 13 and a third triangular kite surface 13 by a method for grinding the first triangular kite surface 13 until the tenth triangular kite surface 13 is ground.

4.3 on the basis of 4.2, based on the rest section of the intersecting edge 101 of the main crown surface 12, the intersecting point 102 of the edge and the waist circle is taken as a starting point, a first upper waist triangular surface 14 is ground towards the center direction of the main crown surface 12 on one side of the edge 101 by using a seventh included angle G, and one end point 102 of a borderline of the intersecting edge of the waist part and the first upper waist triangular surface 14 is positioned at the center position of the intersecting borderline of the main crown surface 12 and the waist part when not ground.

4.4 on the basis of 4.3, based on the rest section of the intersecting edge 101 of the main crown surface 12, the intersecting point 102 of the edge and the waist circle is taken as the starting point, a first second upper waist triangular surface 15 is ground towards the center direction of the main crown surface 12 on the other side of the edge by a seventh included angle G, and the first second upper waist triangular surface is intersected and symmetrical with the first upper waist triangular surface 14 and is generally called a pair of upper waist triangular surfaces 16.

4.5 grinding a second pair of upper triangular faces 16 and a third pair of upper triangular faces 16 by a method of grinding the first pair of upper triangular faces 16 until the tenth pair of upper triangular faces 16 are ground completely, and simultaneously forming ten quadrilateral main crown faces 12, wherein the intersected edges of every two adjacent upper triangular faces are arched upwards.

4.6 the waist is ground into a round shape.

The first sole surface 3 and the waist reference surface form a first included angle A, and the value range of A is 40.5-40.9 degrees; the second bottom rake tip surface 31 and the waist reference surface form a second included angle B, and the value range of B is 35-39 degrees; the third angle surface 32 and the waist reference surface form a third included angle C, and the value range of C is 43-45 degrees; the fourth angle surface 33 and the waist reference surface form a fourth included angle D, and the value range of D is 43-45 degrees; the main crown surface 12 and the waist reference plane form a fifth included angle E, and the value range of E is 32-36 degrees; the triangular kite surface 13 and the waist reference surface form a sixth included angle F, and the value range of F is 22-30 degrees; the first upper waist triangular surface 14, the second upper waist triangular surface 15 and the waist reference surface form a seventh included angle G, and the value range of G is 40-48 degrees; the length h1 of the longest diagonal line of the second bottom rake tip surface 31 accounts for 20% -40% of the length of the intersecting edge of the first bottom rake tip surface 3 when other surfaces are not ground; the length h2 from the point of the third corner surface 32 on the intersecting edge of the first sole surface 3 to the edge line intersecting the waist accounts for 10% -30% of the length of the intersecting edge of the first sole surface 3 when other surfaces are not polished; the length h3 from the point of the fourth corner surface 33 on the intersecting edge of the first sole surface 3 to the edge line intersecting the waist accounts for 5% -15% of the length of the intersecting edge of the first sole surface 3 when other surfaces are not polished; the length h4 from the point of the triangular kite surface 13 on the intersecting edge of the main crown surface 12 to the intersecting edge line of the triangular kite surface and the table top 1 accounts for 47% -53% of the total length of the intersecting edge of the main crown surface 12 when the triangular kite surface is not ground.

As shown in fig. 13 and 14, compared with the prior art, the invention has the advantages that: this diamond facet is novel, and mesa 1 is regular decagon, perfect symmetry, and the structure of each facet sets up rationally, and the size is suitable, watches very pleasing to the eye under special magnifying glass, can observe inside and present a flower and the mutual scenery of coordinating of pentagram moreover, and promotion consumer's that can be very big purchase is wanted. Blanks of diamonds are multiplied by the cut sanding price and can be commercially successful by virtue of the unique facet design of the diamond itself. According to the light refraction principle, a new polishing process is adopted, light entering the diamond is divided into two paths, one path of light is mutually refracted with the first bottom foot surface 3 at the bottom, ten flowers are shown when the table board 1 is observed, the other path of light is refracted for multiple times with the third side corner surface 32 and the second bottom rake tip surface 31, and the patterns of two groups of pentatotems at the periphery and the central pentagram are projected, so that a new variety is provided for diamond series, and more consumption choices are provided for consumers. The effect of the sparkle of the diamond can be improved by 5-20% due to the increased number of the cutting surfaces.

Drawings

FIG. 1 is a photograph of a diamond processed according to the prior art

FIG. 2 is a perspective view of a diamond

FIGS. 3 to 11 are schematic views of diamond processing

FIG. 12 is a front view of a diamond

FIG. 13 is a bottom view of the internal refraction of the diamond

FIG. 14 is a top view of the internal refraction effect of diamond

In the figure, 1-table top, 12-main crown surface, 13-triangular kite surface, 14 first upper waist triangular surface, 15-second upper waist triangular surface, 16-pair of upper waist triangular surfaces, 101-main crown surface intersection edge, 102-main crown surface and waist circle intersection edge midpoint, 103-intersection point of edge 101 and waist circle, 104-intersection edge midpoint of main crown surface and table top, 3-first sole surface, 31-second sole cusp surface, 32-third edge surface, 33-fourth edge surface, 301-first sole surface cusp point, 302-first sole surface intersection edge, 303-pavilion surface 302 and waist circle intersection point, a is drill waist diameter, b is table top diameter, c is crown height, d is pavilion height, a is pavilion angle, b is crown and waist surface angle, and arc c is pavilion and waist surface angle.

Detailed Description

The present invention is further illustrated by the following specific examples.

A diamond presenting a flower and a pentagram therein, the crown comprising: a table-board 1, ten triangle kite surfaces 13, ten main crown surfaces 12, ten first upper waist triangle surfaces 14 and ten second upper waist triangle surfaces 15; the pavilion includes: twenty first sole faces 3, five hexagonal second sole rake tip faces 31, ten pentagonal third corner faces 32 and ten pentagonal fourth corner faces 33; the first sole surface 3 and the waist reference surface form a first included angle A, and the value range of A is 40.5-40.9 degrees; the second bottom rake pointed surface 31 and the waist reference surface form a second included angle B, the value range of B is 35-39 degrees, or the length h1 of the longest diagonal line of the second bottom rake pointed surface 31 accounts for 20-40% of the length of the intersecting edge of the first bottom rake pointed surface 3 when other surfaces are not ground; the third angle surface 32 and the waist reference surface form a third included angle C, the value range of C is 43-45 degrees, or the length h2 from the point of the third angle surface 32 on the intersected edge of the first sole surface 3 to the intersected edge line of the waist accounts for 10% -30% of the length of the intersected edge of the first sole surface 3 when other surfaces are not polished; the fourth angle surface 33 and the waist reference surface form a fourth included angle D, the value range of D is 43-45 degrees, or the length h3 from the point of the fourth angle surface 33 on the intersecting edge of the first sole surface 3 to the intersecting edge line with the waist accounts for 5% -15% of the length of the intersecting edge of the first sole surface 3 when other surfaces are not polished.

Preferably; the ratio of the width of the table top 1 to the diameter of the waist circle is selected from 53-65%; the ratio of the crown height to the waist diameter is selected between 15 percent and 30 percent; the ratio of the pavilion depth to the girdle diameter is selected between 57% and 64%.

2, cutting the waist, and polishing the waist on the drill blank;

the step 3 comprises the following steps:

3.2 as shown in fig. 4 and 5, based on the intersecting edges 302 of two adjacent first foot surfaces 3, a first second foot surface 31 is ground towards the tip point by a second included angle B or a first preset length h1, and then twenty first foot surfaces 3 are ground into five second foot surfaces 31 of connected hexagons according to the same method. The ground first and second undercutting faces 31 are not shown as hexagons, but in practice hexagons can be ground during the machining process, but without this requirement, as long as all of the five second undercutting faces 31 are ground, each face becomes an interconnected and identical hexagon. The pinch point 301 has now been ground away but is still marked in the figure for ease of understanding.

3.4 on the basis of fig. 7, the fourth corner surface 33 of the first pentagon is ground by using the fourth angle D or the third predetermined length h3 with the intersection point 303 of the two third corner surfaces 32 as the starting point, and the second fourth corner surface 33 and the third fourth corner surface 33 are ground by grinding the first fourth corner surface 33 with the intersection point 303 of the other two third corner surfaces 32 as the starting point until the tenth fourth corner surface 33 is finished, as shown in fig. 7. The third predetermined length h3 is shorter than the second predetermined length h 2. The third corner surface 32 is now pentagonal due to the grinding of the fourth corner surface 33.

The step 4 comprises the following steps:

4.1 the crown is rotated to be opposite to the second base rake pointed surface 31 of the rhombus at the bottom, and the transition pentagonal table-board 1 and five main crown surfaces 12 are ground in the direction of the waist by a fifth included angle E. Then, based on the intersected edges 101 of two adjacent main crown surfaces 12, the transitional decagon table board 1 and ten main crown surfaces 12 are ground towards the waist direction by using a fifth included angle E. The main crown surface 12 is adjacent to the table top 1 in a straight line and is on the same side with the waist circle curve. The main crown 12 may not be a simple plane but a conical surface with the upper part being coplanar with the pyramid plane of the table 1 and the lower part having a diameter which is coplanar with the waist circle.

4.2 based on the edge 101 where the two adjacent main crown surfaces 12 intersect, a first triangular kite surface 13 is ground in the direction of the table top 1 by using a sixth included angle F or a fourth preset length h4, and two end points 104 of a borderline where the table top 1 and the first triangular kite surface 13 intersect are respectively located at the central positions of the borderlines where the two main crown surfaces 12 and the table top 1 intersect when not being ground. And grinding a second triangular kite surface 13 and a third triangular kite surface 13 by a method for grinding the first triangular kite surface 13 until the tenth triangular kite surface 13 is ground. Fig. 9 is a schematic diagram of grinding the first upper lumbar triangle surface 14 and the second upper lumbar triangle surface 15 before grinding the triangular kite surface 13, and the grinding sequence of these three surfaces can be reversed during the actual grinding process.

4.3 on the basis of 4.2, based on the rest section of the intersecting edge 101 of the main crown surface 12, the intersecting point 102 of the edge and the waist circle is taken as a starting point, a first upper waist triangular surface 14 is ground towards the center direction of the main crown surface 12 on one side of the edge 101 by using a seventh included angle G, and one end point 102 of a borderline of the intersecting edge of the waist part and the first upper waist triangular surface 14 is positioned at the center position of the intersecting borderline of the main crown surface 12 and the waist part when not ground. The first upper lumbar triangle 14 is a flat surface, and the first upper lumbar triangle 14 can be ground on the major crown surface 12 because the major crown surface 12 is not a flat surface. In the case where the major crown surface 12 is a pyramidal surface, the intersection of the edge with the girdle is ground away to form a plane parallel to the first upper girdle triangle surface 14.

4.4 on the basis of 4.3, based on the rest section of the intersecting edge 101 of the main crown surface 12, the intersecting point 102 of the edge and the waist circle is taken as the starting point, a first second upper waist triangular surface 15 is ground towards the center direction of the main crown surface 12 on the other side of the edge by a seventh included angle G, and the first second upper waist triangular surface is intersected and symmetrical with the first upper waist triangular surface 14 and is generally called a pair of upper waist triangular surfaces 16. Since the triangular kite surface 13 and the pair of upper waisted triangular surfaces 16 have the vertex at the midpoint of one side of the main crown surface 12, it is not difficult to see according to the polishing method, and when the triangular kite surface 13 is polished, the pair of upper waisted triangular surfaces 16 under the triangular kite surface 13 is determined. In the case of grinding the pair of upper waist triangular surfaces 16 first and then grinding the triangular kite surface 13, the triangular kite surface 13 is determined according to the determination of the pair of upper waist triangular surfaces 16.

4.6 the waist is ground into a round shape.

The above-mentioned processing method is not the only processing method capable of processing the diamond, for example, the crown portion is processed and then the pavilion portion is processed; or the third corner surface 32 can be processed firstly, and then the second bottom rake tip surface 31 can be polished; or the first upper waist triangular surface 14 or the second upper waist triangular surface 15 can be processed and polished firstly, and then the triangular kite surface 13 can be processed and polished; the processing sequence of the diamonds can be changed and the diamonds can be polished, and the processing sequence of the diamonds can be changed and combined in various ways due to multiple processing steps, so that the processing sequence is not repeated one by one. In fig. 1, b is 53-57% of a, c is 16.2% of a, d is 43.1% of a, the waist height accounts for 2-3% of a, angle a is 98 °, angle b is 34 °, and angle c is 40 °.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the overall concept of the present invention, and these should also be considered as the protection scope of the present invention.

Claims

1. A diamond presenting a flower and a pentagram therein, the crown comprising: a table-board (1), ten triangle kite surfaces (13), ten main crown surfaces (12), ten first upper waist triangle surfaces (14) and ten second upper waist triangle surfaces (15); the method is characterized in that: the pavilion includes: twenty first bottom foot surfaces (3), five hexagonal second bottom rake tip surfaces (31), ten pentagonal third corner surfaces (32) and ten pentagonal fourth corner surfaces (33); the first sole surface (3) and the waist reference surface form a first included angle A, and the value range of A is 40.5-40.9 degrees; the second included angle B is formed between the second bottom rake pointed surface (31) and the waist reference surface, the value range of B is 35-39 degrees, or the length h1 of the longest diagonal line of the second bottom rake pointed surface (31) accounts for 20% -40% of the length of the intersecting edge of the first bottom rake pointed surface (3) when other surfaces are not ground; the third angle surface (32) and the waist reference surface form a third included angle C, the value range of C is 43-45 degrees, or the length h2 from the point of the third angle surface (32) on the intersecting edge of the first sole surface (3) to the intersecting sideline with the waist accounts for 10% -30% of the length of the intersecting edge of the first sole surface (3) when other surfaces are not polished; the fourth angle surface (33) and the waist reference surface form a fourth included angle D, the value range of D is 43-45 degrees, or the length h3 from the point of the fourth angle surface (33) on the intersecting edge of the first sole surface (3) to the intersecting sideline with the waist accounts for 5% -15% of the length of the intersecting edge of the first sole surface (3) when other surfaces are not ground, the main crown surface (12) and the waist reference surface form a fifth included angle E, and the value range of E is 32-36 degrees; the length h4 from the point of the triangular kite surface (13) on the intersecting edge of the main crown surface (12) to the intersecting sideline of the triangular kite surface and the table top (1) accounts for 47% -53% of the total length of the intersecting edge of the main crown surface (12) when the triangular kite surface is not polished, or the triangular kite surface (13) and the waist datum plane form a sixth included angle F, and the value range of the angle F is 22-30 degrees; the first upper waist triangular surface (14), the second upper waist triangular surface (15) and the waist reference surface form a seventh included angle G, and the value range of G is 40-48 degrees.

2. A diamond presenting a flower and a pentagram therein, the crown comprising: a table-board (1), ten triangle kite surfaces (13), ten main crown surfaces (12), ten first upper waist triangle surfaces (14) and ten second upper waist triangle surfaces (15); the method is characterized in that: the pavilion includes: twenty first sole surfaces (3), five second sole rake tip surfaces (31), ten third corner surfaces (32) and ten fourth corner surfaces (33); the first sole surface (3) and the waist reference surface form a first included angle A, and the value range of A is 40.5-40.9 degrees; the second included angle B is formed between the second bottom rake pointed surface (31) and the waist reference surface, the value range of B is 35-39 degrees, and the length h1 of the longest diagonal line of the second bottom rake pointed surface (31) accounts for 20% -40% of the length of the intersecting edge of the first bottom rake pointed surface (3) when other surfaces are not ground; a third included angle C is formed between the third corner surface (32) and the waist reference surface, the value range of C is 43-45 degrees, and the length h2 from the point of the third corner surface (32) on the intersecting edge of the first sole surface (3) to the edge line intersecting the waist accounts for 10% -30% of the length of the intersecting edge of the first sole surface (3) when other surfaces are not polished; the fourth angle surface (33) and the waist reference surface form a fourth included angle D, the value range of D is 43-45 degrees, the length h3 from the point of the fourth angle surface (33) on the intersecting edge of the first sole surface (3) to the intersecting side line with the waist accounts for 5% -15% of the length of the intersecting edge of the first sole surface (3) when other surfaces are not polished, the main crown surface (12) and the waist reference surface form a fifth included angle E, and the value range of E is 32-36 degrees; the length h4 from the point of the triangular kite surface (13) on the intersecting edge of the main crown surface (12) to the intersecting sideline of the triangular kite surface and the table top (1) accounts for 47% -53% of the total length of the intersecting edge of the main crown surface (12) when the triangular kite surface is not polished, or the triangular kite surface (13) and the waist datum plane form a sixth included angle F, and the value range of the angle F is 22-30 degrees; the first upper waist triangular surface (14), the second upper waist triangular surface (15) and the waist reference surface form a seventh included angle G, and the value range of G is 40-48 degrees.

3. A method for processing a diamond internally presenting a flower and a pentagram, comprising the steps of:

1, cutting a table top (1), and cutting a large plane on a drilling blank to be used as the table top (1);

2, cutting the waist, and polishing the waist on the drill blank;

the step 3 comprises the following steps:

3.1 taking the plane of the waist as a datum plane, wherein the datum plane is parallel to the plane of the table board (1), twenty first sole surfaces (3) are ground towards the middle lower part of the waist at a first included angle A, the twenty first sole surfaces (3) are intersected at a cusp point (301), the twenty first sole surfaces (3) form a twenty-pyramid, and the value range of A is 40.5-40.9 degrees;

3.2 based on the intersected edge (302) of two adjacent first foot surfaces (3), grinding a first second foot rake tip surface (31) towards a rake tip point (301) by a second included angle B or a first preset length h1, then grinding twenty first foot surfaces (3) by the same method to obtain five hexagonal second foot rake tip surfaces (31) which are connected with each other, wherein the value range of B is 35-39 degrees, and the length h1 of the longest diagonal line of the second foot rake tip surface (31) accounts for 20% -40% of the length of the intersected edge when other surfaces on the first foot surfaces (3) are not ground;

3.3 on the basis of 3.2, grinding a first triangular third corner surface (32) towards the waist direction by using a third included angle C or according to a second preset length h2 on the basis of an edge (302) intersected by two adjacent first sole surfaces (3), wherein two end points (303) of a sideline formed by the intersection of the third corner surface (32) and the waist are respectively positioned on the edges (302) of the left first sole surface (3) and the right first sole surface (3); polishing a second third corner surface (32) and a third corner surface (32) on every two ridges (302) intersected with the first sole surface (3) by a method for polishing the first third corner surface (32) until the tenth third corner surface (32) is polished, wherein the value of C ranges from 43 degrees to 45 degrees, and the length h2 from the point of the third corner surface (32) on the ridge intersected with the first sole surface (3) to the edge line intersected with the waist accounts for 10% -30% of the length of the intersected ridge of the first sole surface (3) when other surfaces are not polished;

3.4 based on 3.3, polishing a fourth corner surface (33) of the first pentagon by using a fourth included angle D or a third preset length h3 with the intersection point (303) of two third corner surfaces (32) as a starting point, and polishing a second fourth corner surface (33) and a third fourth corner surface (33) by using the intersection point (303) of other two third corner surfaces (32) as a starting point and a method for polishing the first fourth corner surface (33) until a tenth fourth corner surface (33) is finished; the third predetermined length h3 is shorter than the second predetermined length h 2; at the moment, the third corner surface (32) is a pentagon formed by polishing the fourth corner surface (33), the value range of D is 43-45 degrees, and the length h3 from the point of the fourth corner surface (33) on the intersecting edge of the first sole surface (3) to the edge line intersecting the waist accounts for 5% -15% of the length of the intersecting edge of the first sole surface (3) when other surfaces are not polished;

the step 4 comprises the following steps:

4.1, the crown part is rotated to be opposite to a second bottom rake pointed surface (31) of the rhombus at the bottom, and a transition pentagonal table board (1) and five main crown surfaces (12) are ground in the direction of the waist part by using a fifth included angle E; then, on the basis of an edge (101) formed by the intersection of two adjacent main crown surfaces (12), a transition decagonal table board (1) and ten main crown surfaces (12) are ground towards the waist direction by using a fifth included angle E, and the value range of E is 32-36 degrees;

4.2 based on the intersected edge of two adjacent main crown surfaces (12), a first triangular kite surface (13) is ground towards the direction of the table top (1) by using a sixth included angle F or a fourth preset length h4, and two end points (104) of the intersected edge line of the table top (1) and the first triangular kite surface (13) are respectively positioned at the central positions of the intersected edge lines of the two main crown surfaces (12) and the table top (1) when the two main crown surfaces (12) are not ground; grinding a second triangular kite surface (13) and a third triangular kite surface (13) by a method for grinding a first triangular kite surface (13), wherein the value range of F is 22-30 degrees until a tenth triangular kite surface (13) is ground, and the length h4 from the point of the triangular kite surface (13) on the intersected edge of the main crown surface (12) to the intersected sideline of the main crown surface (1) accounts for 47% -53% of the total length of the intersected edge of the main crown surface (12) when the triangular kite surface is not ground;

4.3 on the basis of 4.2, polishing a first upper waist triangular surface (14) towards the center direction of the main crown surface (12) on one side of the ridge (101) by using a seventh included angle G on the basis of the rest section of the intersecting ridge (101) of the main crown surface (12) and the intersection point (103) of the ridge and the waist circle as a starting point, wherein one end point (104) of a boundary line of the intersection of the waist and the first upper waist triangular surface (14) is positioned at the center position of the intersecting boundary line of the main crown surface (12) and the waist when the boundary line is not polished, and the value range of G is 40-48 degrees;

4.4 on the basis of 4.3, grinding a first second upper waist triangular surface (15) towards the center direction of the main crown surface (12) at the other side of the ridge (101) by using a seventh included angle G on the basis of the rest section of the intersected ridge (101) of the main crown surface (12) and the intersection point (104) of the ridge (101) and the waist circle as a starting point, and intersecting and symmetrical with the first upper waist triangular surface (14) to be generally called a pair of upper waist triangular surfaces (16);

4.5 grinding a second pair of upper triangular faces (16) and a third pair of upper triangular faces (16) by a method for grinding the first pair of upper triangular faces (16), and forming ten main quadrangular crown faces (12) at the same time until the tenth pair of upper triangular faces (16) are ground, wherein the intersected edges of every two adjacent upper triangular faces are arched upwards;

4.6 the waist is ground into a round shape.