CA2737469C - Decagonal shaped diamond which displays hearts and arrows pattern - Google Patents
Decagonal shaped diamond which displays hearts and arrows pattern Download PDFInfo
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- CA2737469C CA2737469C CA2737469A CA2737469A CA2737469C CA 2737469 C CA2737469 C CA 2737469C CA 2737469 A CA2737469 A CA 2737469A CA 2737469 A CA2737469 A CA 2737469A CA 2737469 C CA2737469 C CA 2737469C
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- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
- A44C17/00—Gems or the like
- A44C17/001—Faceting gems
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Abstract
A decagonal shaped diamond, adapted to display a hearts and arrows pattern when exposed to light comparable to the hearts and arrows pattern in a round diamond. The decagonal shaped diamond should be cut to form ten main crown facets of substantially equal size symmetrically arranged relative to one another surrounding a table facet twenty star facets with two star facets polished on every main crown facet, ten main pavilion facets, an equal number of crown half facets as pavilion half facets and ten main girdle facets with the girdle facets polished at a given angle relative to one another for forming the decagonal shape of the diamond.
Description
DECAGONAL SHAPED DIAMOND WHICH DISPLAYS
HEARTS AND ARROWS PATTERN
FIELD OF THE INVENTION
The present invention relates to the field of cut diamonds and more particularly to a diamond having a decagonal shape adapted to generate a hearts and arrows pattern substantially comparable to the hearts and arrows pattern generated by an ideal round cut diamond when exposed to light.
BACKGROUND OF THE INVENTION
A hearts and arrows pattern will be displayed by a round cut diamond when exposed to light when the round cut diamond has a nearly perfect symmetrical shape and possesses equal and symmetrically cut facets polished to within relatively narrow proportional ranges, as taught below in Table I. A
near perfect round cut diamond having a hearts and arrows pattern provides brilliance, color and optical light handling properties which has not been matched in the marketplace by any other shaped diamond to date. Although diamonds are typically cut into many known geometrical shapes other than round such as, for example, a heart shape, oval, pear, marquis, princess, emerald, etc., it is currently unknown to cut a diamond into a decagonal shape which will yield a hearts and arrows pattern comparable to the hearts and arrows pattern generated by a round cut diamond of nearly perfect symmetrically round shape when exposed to light.
Heretofore, it was widely believed in the diamond industry that only the round cut diamond could generate a true hearts and arrows pattern. This belief was primarily based upon the fact that the round cut diamond has such a nearly perfect symmetrical shape and that all of its crown and pavilion facets can be readily cut to the same angle degrees with the angle differences between all of its pavilion angles being smaller than 0.3 , and with the angle tolerance between the main crown facets being smaller than 0.4 and the angle tolerance for the subsidiary crown facets being smaller than 0.3 . This led to the widely accepted belief within the diamond industry that it is only possible to obtain a true hearts and arrows pattern on a diamond polished to simulate the nearly perfect symmetrical shape of a round shaped diamond using the narrow angular tolerances known to yield a hearts and arrows pattern in a round cut diamond.
A decagonal shaped diamond has a geometrical shape which is dramatically different from that of a round diamond. Accordingly, if one accepts the widely accepted belief that only the round cut diamond can generate a true hearts and arrows pattern, it is inconceivable to polish the diamond into a decagonal shape which will yield a hearts and arrows pattern comparable to the hearts and arrows pattern in the round cut diamond.
HEARTS AND ARROWS PATTERN
FIELD OF THE INVENTION
The present invention relates to the field of cut diamonds and more particularly to a diamond having a decagonal shape adapted to generate a hearts and arrows pattern substantially comparable to the hearts and arrows pattern generated by an ideal round cut diamond when exposed to light.
BACKGROUND OF THE INVENTION
A hearts and arrows pattern will be displayed by a round cut diamond when exposed to light when the round cut diamond has a nearly perfect symmetrical shape and possesses equal and symmetrically cut facets polished to within relatively narrow proportional ranges, as taught below in Table I. A
near perfect round cut diamond having a hearts and arrows pattern provides brilliance, color and optical light handling properties which has not been matched in the marketplace by any other shaped diamond to date. Although diamonds are typically cut into many known geometrical shapes other than round such as, for example, a heart shape, oval, pear, marquis, princess, emerald, etc., it is currently unknown to cut a diamond into a decagonal shape which will yield a hearts and arrows pattern comparable to the hearts and arrows pattern generated by a round cut diamond of nearly perfect symmetrically round shape when exposed to light.
Heretofore, it was widely believed in the diamond industry that only the round cut diamond could generate a true hearts and arrows pattern. This belief was primarily based upon the fact that the round cut diamond has such a nearly perfect symmetrical shape and that all of its crown and pavilion facets can be readily cut to the same angle degrees with the angle differences between all of its pavilion angles being smaller than 0.3 , and with the angle tolerance between the main crown facets being smaller than 0.4 and the angle tolerance for the subsidiary crown facets being smaller than 0.3 . This led to the widely accepted belief within the diamond industry that it is only possible to obtain a true hearts and arrows pattern on a diamond polished to simulate the nearly perfect symmetrical shape of a round shaped diamond using the narrow angular tolerances known to yield a hearts and arrows pattern in a round cut diamond.
A decagonal shaped diamond has a geometrical shape which is dramatically different from that of a round diamond. Accordingly, if one accepts the widely accepted belief that only the round cut diamond can generate a true hearts and arrows pattern, it is inconceivable to polish the diamond into a decagonal shape which will yield a hearts and arrows pattern comparable to the hearts and arrows pattern in the round cut diamond.
In a round cut diamond, the hearts and arrows pattern appears only when the requirements for its cut facets, angle parameters and alignment relationships are as shown in the following Table 1:
=
= The shape of the diamond is perfectly symmetrical.
= 8 main crown and 24 subsidiary crown facets.
= 8 main bottom and 16 subsidiary bottom facets.
= All main facets (crown & bottom) have to be polished at a perfect 45 angle to each other.
= All facets are perfectly aligned.
= All the bottom main facets are of equal size and at an angle ranging from 40.6 - 41.0 .
= All the bottom subsidiary facets are of equal size and at an angle which is exactly 1.2 steeper than the main facets (main bottom angle 40.6 - 41.0 + subsidiary 41.8 - 42.2 ).
= All the main crown facets are of equal size and at an angle ranging from 33.8 - 35.1 . They have to be perfectly aligned on the main bottom facets.
= All the subsidiary crown facets are of equal size and perfectly aligned on the main crown and subsidiary bottom facets and polished at an equal angle.
= The ideal cut proportions are : total depth 59.4% ¨ 62.4% crown height 14.5% ¨ 16.0%
girdle thickness 1.5% ¨ 2.95%
roundness 99.0% ¨ 100%
table size: 53.0% ¨ 57.5%
=
= The shape of the diamond is perfectly symmetrical.
= 8 main crown and 24 subsidiary crown facets.
= 8 main bottom and 16 subsidiary bottom facets.
= All main facets (crown & bottom) have to be polished at a perfect 45 angle to each other.
= All facets are perfectly aligned.
= All the bottom main facets are of equal size and at an angle ranging from 40.6 - 41.0 .
= All the bottom subsidiary facets are of equal size and at an angle which is exactly 1.2 steeper than the main facets (main bottom angle 40.6 - 41.0 + subsidiary 41.8 - 42.2 ).
= All the main crown facets are of equal size and at an angle ranging from 33.8 - 35.1 . They have to be perfectly aligned on the main bottom facets.
= All the subsidiary crown facets are of equal size and perfectly aligned on the main crown and subsidiary bottom facets and polished at an equal angle.
= The ideal cut proportions are : total depth 59.4% ¨ 62.4% crown height 14.5% ¨ 16.0%
girdle thickness 1.5% ¨ 2.95%
roundness 99.0% ¨ 100%
table size: 53.0% ¨ 57.5%
SUMMARY OF THE INVENTION
The diamond of the present invention is cut into a decagonal shape adapted to display a hearts and arrows pattern substantially equivalent to the hearts and arrows pattern displayed in a round diamond when exposed to light.
The decagonal cut diamond of the present invention comprises: ten main crown facets, ten main pavilion facets, twenty star facets with two star facets polished on every main crown facet, an equal number of crown half facets as pavilion half facets and ten main girdle facets with the girdle facets polished at a given angle relative to one another for forming the decagonal shape of the diamond.
In accordance with one aspect of the invention there is provided a decagonal shaped diamond, adapted to display a hearts and arrows pattern when exposed to light comparable to the hearts and arrows pattern in a round diamond. The decagonal shaped diamond includes ten main crown facets symmetrically arranged about a table facet, twenty star facets with two star facets polished on every main crown facet, ten main pavilion facets, an equal number of crown half facets as pavilion half facets and ten main girdle facets with each of the ten girdle facets having an irregular shape of substantially identical configuration and size relative to one another and with each polished at a given angle substantially equal to 36 relative to the girdle facet on each adjacent side thereof for forming the decagonal shape of the diamond. Each of the main crown facets are polished to within a degree range of between 33.8 - 35.2 , each of the crown half facets are polished within an angle range of 37 - 40.8 and the ten main pavilion facets are polished in alignment with the main crown facets and girdle facets.
The decagonal shaped diamond may include twenty crown half facets and twenty pavilion half facets.
The main crown facets may be polished within an angle tolerance of 0.4 .
The diamond of the present invention is cut into a decagonal shape adapted to display a hearts and arrows pattern substantially equivalent to the hearts and arrows pattern displayed in a round diamond when exposed to light.
The decagonal cut diamond of the present invention comprises: ten main crown facets, ten main pavilion facets, twenty star facets with two star facets polished on every main crown facet, an equal number of crown half facets as pavilion half facets and ten main girdle facets with the girdle facets polished at a given angle relative to one another for forming the decagonal shape of the diamond.
In accordance with one aspect of the invention there is provided a decagonal shaped diamond, adapted to display a hearts and arrows pattern when exposed to light comparable to the hearts and arrows pattern in a round diamond. The decagonal shaped diamond includes ten main crown facets symmetrically arranged about a table facet, twenty star facets with two star facets polished on every main crown facet, ten main pavilion facets, an equal number of crown half facets as pavilion half facets and ten main girdle facets with each of the ten girdle facets having an irregular shape of substantially identical configuration and size relative to one another and with each polished at a given angle substantially equal to 36 relative to the girdle facet on each adjacent side thereof for forming the decagonal shape of the diamond. Each of the main crown facets are polished to within a degree range of between 33.8 - 35.2 , each of the crown half facets are polished within an angle range of 37 - 40.8 and the ten main pavilion facets are polished in alignment with the main crown facets and girdle facets.
The decagonal shaped diamond may include twenty crown half facets and twenty pavilion half facets.
The main crown facets may be polished within an angle tolerance of 0.4 .
Each at the ten main pavilion facets may be polished at an angle degree range of between 40.6 - 41.1 .
The ten main pavilion facets may extend from a common point located at the center or Cu let of the diamond.
The pavilion half facets may be of triangular geometry with two of the pavilion half facets formed on each main pavilion facet in a symmetrical arrangement.
Each pavilion half facet may be polished to within an angle degree range of between 41.5 and 42.2 .
The angle degree tolerance between the pavilion half facets and the crown half facets may not exceed 0.8 .
BRIEF DESCRIPTION OF THE DRAWINGS
Other advantages will become apparent from the following detailed description of the invention when read in conjunction with the accompanying drawings of which:
Fig. 1 is a top view of the decagonal shaped diamond of the present invention showing a symmetrical arrangement of ten main crown facets on the table facet side of the diamond;
Fig. 2 is another top view of the decagonal shaped diamond of the present invention similar to figure 1 showing the formation and symmetrical arrangement of the main crown facets relative to one another;
=
Fig. 3 is yet another top view of the decagonal shaped diamond of the present invention similar to figure 2 showing the formation and arrangement of the main crown facets and the counterpart main pavilion facets;
Fig. 4 is an additional top view of the decagonal shaped diamond of the present invention similar to figure 2 showing the arrangement and relationship of the crown star facets, crown half facets and the main crown facets;
Fig. 5 is a pavilion view of the of the decagonal shaped diamond of the present invention showing the ten main pavilion facets and twenty pavilion half facets symmetrically arranged about the center or culet of the diamond;
Fig. 6 is another table view of the of the decagonal shaped diamond of the present invention similar to Figure 4 showing the crown star facets and crown half facets and the projection of the main pavilion facets arranged relative to the main crown facets; and Fig. 7 is a side profile view of the decagonal shaped diamond of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
A diamond is a crystal which functions as a prism for dispersing light by means of reflection and refraction. The diamond of the present invention 10, as shown in Figures 1-7, possesses a decagonal shape having ten main crown facets (mcfs) of essentially equal size with each main crown facet (mcf) being aligned opposite another main crown (mcf) facet in a symmetrical arrangement surrounding a table facet (if) ten main pavilion facets (mpfs) each in alignment with a main crown facet, twenty crown star facets (csfs) of substantially equal size with two of the crown star facets polished on every main crown facet (mcf), a number of crown half facets (chfs) equal to the number of pavilion half facets (phfs) and preferably corresponding to the number of crown star facets (csfs) and ten main girdle facets (gfs) with the girdle facets polished at a given angle relative to one another for forming the decagonal shape of the diamond.
The girdle facets gfs are polished first into ten equal size girdle facets gfs to give the diamond a decagonal shaped geometry with all of the main facets in line with the shape of the stone. Each girdle facet should be equal in size and at a precise angle of preferably 36 relative to each adjacent girdle facet. The main crown facets are then polished preferably within an angle range of 33.8 to 35.2 and should preferably be of equal size and depth. The main pavilion facets may then be polished in alignment to the main crown facets and main girdle facets and preferably within an angle degree range of 40.6 to 41.1 .
The 20 crown star facets and the 20 crown half facets are then polished on the decagonal shaped diamond 10 followed by polishing the pavilion half facets. The pavilion half facets are preferably polished within an angle range of 41.5 - 42.2 . The crown half facets are preferably polished within an angle range of 370 - 40.8 . The 20 crown star facets should be polished so that there are two star facets provided on every main crown facet. It should be understood that polishing two star facets on every main crown facet results in an unusual star pattern needed to assure that an undistorted hearts and arrows pattern will be displayed. Moreover, the angle degree tolerance between all pavilion half facets and for all the crown half facets should not exceed 0.8 .
The faceting alignment should be as near perfect as possible preferably using a microscope with a lens of 100X magnification to determine accuracy.
To produce a decagonal shaped diamond possessing a true hearts and arrows pattern equivalent to the hearts and arrows pattern of the round cut, the diamond should be cut to satisfy the optimum parameters as set forth below in Table 2:
Total Depth: 56.4%-66.8%
Table size 53.0%-60.2%
Pavilion Depth 41.2%- 46.5%
Crown Height 13.4%- 16.8%
Crown angle 33.8%- 35.2%
Girdle thickness 0.6%- 7.5%
Angle degree discrepancy between all main facets has to be less than 0.5 and between all star crown and half facets less than 0.7 . The main facets should all be perfectly equal in terms of the angle degree used and size and depth and at an angle tolerance of 0.4 .
The ten main pavilion facets may extend from a common point located at the center or Cu let of the diamond.
The pavilion half facets may be of triangular geometry with two of the pavilion half facets formed on each main pavilion facet in a symmetrical arrangement.
Each pavilion half facet may be polished to within an angle degree range of between 41.5 and 42.2 .
The angle degree tolerance between the pavilion half facets and the crown half facets may not exceed 0.8 .
BRIEF DESCRIPTION OF THE DRAWINGS
Other advantages will become apparent from the following detailed description of the invention when read in conjunction with the accompanying drawings of which:
Fig. 1 is a top view of the decagonal shaped diamond of the present invention showing a symmetrical arrangement of ten main crown facets on the table facet side of the diamond;
Fig. 2 is another top view of the decagonal shaped diamond of the present invention similar to figure 1 showing the formation and symmetrical arrangement of the main crown facets relative to one another;
=
Fig. 3 is yet another top view of the decagonal shaped diamond of the present invention similar to figure 2 showing the formation and arrangement of the main crown facets and the counterpart main pavilion facets;
Fig. 4 is an additional top view of the decagonal shaped diamond of the present invention similar to figure 2 showing the arrangement and relationship of the crown star facets, crown half facets and the main crown facets;
Fig. 5 is a pavilion view of the of the decagonal shaped diamond of the present invention showing the ten main pavilion facets and twenty pavilion half facets symmetrically arranged about the center or culet of the diamond;
Fig. 6 is another table view of the of the decagonal shaped diamond of the present invention similar to Figure 4 showing the crown star facets and crown half facets and the projection of the main pavilion facets arranged relative to the main crown facets; and Fig. 7 is a side profile view of the decagonal shaped diamond of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
A diamond is a crystal which functions as a prism for dispersing light by means of reflection and refraction. The diamond of the present invention 10, as shown in Figures 1-7, possesses a decagonal shape having ten main crown facets (mcfs) of essentially equal size with each main crown facet (mcf) being aligned opposite another main crown (mcf) facet in a symmetrical arrangement surrounding a table facet (if) ten main pavilion facets (mpfs) each in alignment with a main crown facet, twenty crown star facets (csfs) of substantially equal size with two of the crown star facets polished on every main crown facet (mcf), a number of crown half facets (chfs) equal to the number of pavilion half facets (phfs) and preferably corresponding to the number of crown star facets (csfs) and ten main girdle facets (gfs) with the girdle facets polished at a given angle relative to one another for forming the decagonal shape of the diamond.
The girdle facets gfs are polished first into ten equal size girdle facets gfs to give the diamond a decagonal shaped geometry with all of the main facets in line with the shape of the stone. Each girdle facet should be equal in size and at a precise angle of preferably 36 relative to each adjacent girdle facet. The main crown facets are then polished preferably within an angle range of 33.8 to 35.2 and should preferably be of equal size and depth. The main pavilion facets may then be polished in alignment to the main crown facets and main girdle facets and preferably within an angle degree range of 40.6 to 41.1 .
The 20 crown star facets and the 20 crown half facets are then polished on the decagonal shaped diamond 10 followed by polishing the pavilion half facets. The pavilion half facets are preferably polished within an angle range of 41.5 - 42.2 . The crown half facets are preferably polished within an angle range of 370 - 40.8 . The 20 crown star facets should be polished so that there are two star facets provided on every main crown facet. It should be understood that polishing two star facets on every main crown facet results in an unusual star pattern needed to assure that an undistorted hearts and arrows pattern will be displayed. Moreover, the angle degree tolerance between all pavilion half facets and for all the crown half facets should not exceed 0.8 .
The faceting alignment should be as near perfect as possible preferably using a microscope with a lens of 100X magnification to determine accuracy.
To produce a decagonal shaped diamond possessing a true hearts and arrows pattern equivalent to the hearts and arrows pattern of the round cut, the diamond should be cut to satisfy the optimum parameters as set forth below in Table 2:
Total Depth: 56.4%-66.8%
Table size 53.0%-60.2%
Pavilion Depth 41.2%- 46.5%
Crown Height 13.4%- 16.8%
Crown angle 33.8%- 35.2%
Girdle thickness 0.6%- 7.5%
Angle degree discrepancy between all main facets has to be less than 0.5 and between all star crown and half facets less than 0.7 . The main facets should all be perfectly equal in terms of the angle degree used and size and depth and at an angle tolerance of 0.4 .
Claims (8)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A decagonal shaped diamond, adapted to display a hearts and arrows pattern when exposed to light comparable to the hearts and arrows pattern in a round diamond, comprising: ten main crown facets symmetrically arranged about a table facet, twenty star facets with two star facets polished on every main crown facet, ten main pavilion facets, an equal number of crown half facets as pavilion half facets and ten main girdle facets with each of the ten girdle facets having an irregular shape of substantially identical configuration and size relative to one another and with each polished at a given angle substantially equal to 36° relative to the girdle facet on each adjacent side thereof for forming the decagonal shape of the diamond wherein each of the main crown facets are polished to within a degree range of between 33.8° - 35.2°, wherein each of the crown half facets are polished within an angle range of 37° - 40.8° and wherein the ten main pavilion facets are polished in alignment with the main crown facets and girdle facets.
2. A decagonal shaped diamond as defined in claim 1 further comprising twenty crown half facets and twenty pavilion half facets.
3. A decagonal shaped diamond as defined in claim 2 wherein the main crown facets are polished within an angle tolerance of 0.4°.
4. A decagonal shaped diamond as defined in claim 3 wherein each at the ten main pavilion facets are polished at an angle degree range of between 40.6° - 41.1°
5. A decagonal shaped diamond as defined in claim 3 wherein the ten main pavilion facets extend from a common point located at the center or culet of the diamond.
6. A decagonal shaped diamond as defined in claim 5 wherein the pavilion half facets are of triangular geometry with two of the pavilion half facets formed on each main pavilion facet in a symmetrical arrangement.
7. A decagonal shaped diamond as defined in claim 6 wherein each pavilion half facet is polished to within an angle degree range of between 41.5° and 42.2°.
8. A decagonal shaped diamond as defined in claim 7 wherein the angle degree tolerance between the pavilion half facets and the crown half facets does not exceed 0.8°.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/US2008/010776 WO2010033099A1 (en) | 2008-09-16 | 2008-09-16 | Decagonal shaped diamond which displays hearts and arrows pattern |
| US12/208,806 US20090178438A1 (en) | 2007-05-04 | 2008-09-16 | Decagonal shaped diamond which displays hearts and arrows pattern |
| US12/208,806 | 2008-09-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2737469A1 CA2737469A1 (en) | 2010-03-25 |
| CA2737469C true CA2737469C (en) | 2014-11-25 |
Family
ID=40790498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2737469A Active CA2737469C (en) | 2008-09-16 | 2008-09-16 | Decagonal shaped diamond which displays hearts and arrows pattern |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20090178438A1 (en) |
| CN (1) | CN102238885B (en) |
| CA (1) | CA2737469C (en) |
| HK (1) | HK1162269A1 (en) |
| WO (1) | WO2010033099A1 (en) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9326570B2 (en) | 2008-09-16 | 2016-05-03 | Worldwide Diamond Trademarks Ltd. | Decagonal shaped diamond which displays hearts and arrows pattern |
| US20110302959A1 (en) * | 2010-06-11 | 2011-12-15 | Adam Wcislo | Precious stone setting |
| CN103504734A (en) * | 2012-06-27 | 2014-01-15 | 广东钻石世家国际珠宝有限公司 | Manufacturing method of octagonal diamond with eight hearts and eight arrows inside |
| CN103932462B (en) * | 2013-01-23 | 2016-07-06 | 全球钻石商标有限公司 | There is the square diamond of princess and the method for the improvement of eight heart eight arrow patterns |
| US10376026B2 (en) | 2013-02-26 | 2019-08-13 | Shenzhen Perfect Love Diamond Co., Ltd. | Diamond with eighty-one facets having a ten hearts and ten arrows inner structure and a cutting method thereof |
| CN103126215B (en) * | 2013-02-26 | 2015-01-21 | 张坤芝 | 81-facet diamond with 10-heart-and-10-arrow structure inside |
| CN103405007A (en) * | 2013-08-30 | 2013-11-27 | 贺仟泰 | Colorful and bright diamond |
| CN104416684B (en) * | 2013-09-02 | 2018-03-27 | 深圳市品越珠宝有限公司 | One kind combines heart-shaped diamond cutting process |
| JP6490930B2 (en) * | 2013-09-30 | 2019-03-27 | ワールドワイド ダイヤモンド トレードマークス リミテッドＷｏｒｌｄｗｉｄｅ Ｄｉａｍｏｎｄ Ｔｒａｄｅｍａｒｋｓ Ｌｔｄ． | A decagonal diamond with a heart-and-arrow pattern |
| CN103564998B (en) * | 2013-11-11 | 2015-11-11 | 张坤芝 | Inside presents the diamond of 85 facets of 12 arrow structures |
| USD901324S1 (en) | 2015-04-22 | 2020-11-10 | Shenzhen Perfect Love Diamond Co., Ltd. | Diamond with eighty-one facets |
| US10258118B2 (en) * | 2015-06-16 | 2019-04-16 | Worldwide Diamond Trademarks Ltd. | Oval shaped diamond cut having hearts and arrows pattern |
| CN105077866A (en) * | 2015-09-30 | 2015-11-25 | 张坤芝 | Diamond with ten-heart and ten-arrow structure inside and 101 facets and processing method of diamond |
| CN106974379A (en) * | 2016-01-15 | 2017-07-25 | 张少群 | A kind of diamond structures of internal 111 facets that the arrow of ten heart ten is presented |
| CN106974380A (en) * | 2016-01-15 | 2017-07-25 | 张少群 | A kind of diamond structures of internal 101 facets that the arrow structure of ten heart ten is presented |
| CN105795630B (en) * | 2016-05-06 | 2018-09-21 | 比利芙珠宝股份有限公司 | A kind of diamond of ten hearts, one floral structure |
| GB2566866A (en) * | 2016-07-19 | 2019-03-27 | Dayalbhai Goti Shailesh | A gemstone cut |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR323618A (en) * | 1902-08-09 | 1903-03-10 | A M I Tolkowsky | New diamond shape, called "diamond star" |
| USD416511S (en) * | 1998-05-26 | 1999-11-16 | Robert Rams | Precious stone |
| USD498170S1 (en) * | 2000-06-19 | 2004-11-09 | Rosy Blue N.V., A Corp. of Belgium | Marquise cut precious stone design |
| USD462290S1 (en) * | 2001-06-12 | 2002-09-03 | Diamintangibles International, Ltd. | Precious stone |
| USD459676S1 (en) * | 2001-10-25 | 2002-07-02 | Sundiamond Usa, Corp. | Diamond or similar article |
| USD475650S1 (en) * | 2002-02-22 | 2003-06-10 | Samuel Aaron, Inc. | Brilliant-cut diamond |
| US20030221452A1 (en) * | 2002-05-30 | 2003-12-04 | Mickey Weinstock & Co. | Jewel bearing a gemstone |
| JP3962695B2 (en) * | 2003-02-13 | 2007-08-22 | 東京真珠株式会社 | Diamond cutting method and diamond obtained thereby |
| CA104196S (en) * | 2003-03-10 | 2004-12-23 | Diarough | Diamond |
| USD521409S1 (en) * | 2003-07-09 | 2006-05-23 | H. Stern Comerico E Industria S.A. | Gem stone |
| USD511989S1 (en) * | 2003-08-06 | 2005-11-29 | H. Stern Comercio E Industria S.A. | Gem stone |
| USD514472S1 (en) * | 2003-12-03 | 2006-02-07 | Diamintangibles International, Ltd | Diamond |
| USD569296S1 (en) * | 2004-04-28 | 2008-05-20 | Gitanjali Gems Limited | Fresia cut jewel |
| USD544807S1 (en) * | 2005-12-20 | 2007-06-19 | Yuan Joe C C | Diamond |
| JP2008054838A (en) * | 2006-08-30 | 2008-03-13 | Komiya:Kk | Diamond |
| CN201108098Y (en) * | 2007-05-17 | 2008-09-03 | 佛山市顺德区伦教首饰钻石加工厂 | Circular diamonds with eighty one facets |
-
2008
- 2008-09-16 US US12/208,806 patent/US20090178438A1/en not_active Abandoned
- 2008-09-16 CN CN200880131981.6A patent/CN102238885B/en active Active
- 2008-09-16 WO PCT/US2008/010776 patent/WO2010033099A1/en active Application Filing
- 2008-09-16 CA CA2737469A patent/CA2737469C/en active Active
-
2012
- 2012-03-15 HK HK12102647.9A patent/HK1162269A1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CN102238885A (en) | 2011-11-09 |
| CA2737469A1 (en) | 2010-03-25 |
| WO2010033099A1 (en) | 2010-03-25 |
| HK1162269A1 (en) | 2012-08-31 |
| CN102238885B (en) | 2015-02-11 |
| US20090178438A1 (en) | 2009-07-16 |
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