US20120024009A1 - Multi-faceted gemstone for multi-stone jewelry item - Google Patents
Multi-faceted gemstone for multi-stone jewelry item Download PDFInfo
- Publication number
- US20120024009A1 US20120024009A1 US12/845,856 US84585610A US2012024009A1 US 20120024009 A1 US20120024009 A1 US 20120024009A1 US 84585610 A US84585610 A US 84585610A US 2012024009 A1 US2012024009 A1 US 2012024009A1
- Authority
- US
- United States
- Prior art keywords
- gemstone
- crown
- top surface
- surface portions
- slope
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 239000010437 gem Substances 0.000 title claims abstract description 124
- 229910001751 gemstone Inorganic materials 0.000 title claims abstract description 124
- 239000004575 stone Substances 0.000 title description 4
- 239000010432 diamond Substances 0.000 abstract description 23
- 229910003460 diamond Inorganic materials 0.000 abstract description 18
- 239000002184 metal Substances 0.000 description 4
- 241000579895 Chlorostilbon Species 0.000 description 1
- 235000014443 Pyrus communis Nutrition 0.000 description 1
- 230000001010 compromised effect Effects 0.000 description 1
- 239000010976 emerald Substances 0.000 description 1
- 229910052876 emerald Inorganic materials 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
- A44C17/00—Gems or the like
- A44C17/002—Gems made of several cut pieces
-
- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
- A44C17/00—Gems or the like
- A44C17/001—Faceting gems
Definitions
- This invention relates generally to gemstones and more particularly to a multi-faceted gemstone particularly suitable for use in a multi-stone jewelry item.
- one aspect of the present invention is to provide a new diamond cut that can be mounted on a piece of jewelry to provide a continuous diamond look.
- Another aspect of the present invention to provide a new diamond cut that can be mounted on a piece of jewelry to provide a continuous diamond look while at the same time enhancing the aesthetic look of the jewelry piece.
- a still further aspect of the present invention is to provide a new diamond cut that can vary in shape and cut faceting but nonetheless can be mounted on a piece of jewelry to provide a continuous diamond look.
- a gemstone having a front, a back and a bottom, with the gemstone having a lower pavilion and an upper crown.
- the crown has a top surface and a pair of depending opposed planar sides.
- the top surface of the crown has a convex shape such that the top surface arcuately runs in a lateral direction from said front to said back of said gemstone.
- FIG. 1A is a top plan view of a gemstone according to one embodiment of the present invention.
- FIG. 1B is a front elevation view thereof
- FIG. 1C is a side elevation view thereof
- FIG. 1D is perspective view thereof
- FIG. 1E is a cross sectional view of the invention taken along line 1 - 1 of FIG. 1A ;
- FIG. 1F is a bottom plan view thereof
- FIG. 2A is a top plan view of a gemstone according to a second embodiment of the present invention.
- FIG. 2B is a front elevation view thereof
- FIG. 3A is a top plan view of a gemstone according to a third embodiment of the present invention.
- FIG. 3B is a front elevation view thereof
- FIG. 4A is a top plan view of a gemstone according to a fourth embodiment of the present invention.
- FIG. 4B is a front elevation view thereof
- FIG. 4C is a side elevation view thereof
- FIG. 4D is perspective view thereof
- FIG. 5A is a top plan view of a gemstone according to a fifth embodiment of the present invention.
- FIG. 5B is a front elevation view thereof
- FIG. 6A is a top plan view of a gemstone according to a sixth embodiment of the present invention.
- FIG. 7A is a top plan view of a gemstone according to a seventh embodiment of the present invention.
- FIG. 7B is a cross sectional view of the invention taken along line 7 - 7 of FIG. 7A ;
- FIG. 8 is a perspective view of a wedding ring according to the present invention showing a gemstone of the present invention being inserted into the ring mounting and also showing several additional gemstones already in place;
- FIG. 9 is an enlarged view showing a gemstone of the present invention being inserted into the ring mounting
- FIG. 10 is a perspective view of the wedding ring of FIG. 8 with all the gemstones in place;
- FIG. 11 is a cross sectional view taken along the line 11 - 11 of FIG. 10 ;
- FIG. 12 is a cross sectional view taken along the line 12 - 12 of FIG. 10 .
- a gemstone according to the present invention is generally designated 10 .
- Gemstone 10 has a front 10 a , a back 10 b and a bottom 10 c .
- Gemstone 10 includes a crown generally designated 12 and a pavilion generally designated 14 .
- gemstone 10 does not include a table nor does it include a girdle.
- Crown 12 which has a front side 12 a , a rear side 12 b , a first or right side 12 c , a second or left side 12 d and a top 12 e , defines multi-faceted crown surface 15 located along top 12 e of crown 12 .
- Multi-faceted crown surface 15 has a convex shape such that crown surface 15 arcuately runs in a lateral direction essentially from the front to the back of gemstone 10 . Although crown surface 15 is arcuate in the lateral direction, it is non-arcuate in the longitudinal direction of the crown. Multi-faceted crown surface 15 has a first multi-faceted crown surface portion 16 and a second multi-faceted crown surface portion 18 , each having a plurality of facets 20 . Facets 20 may include rhombus shaped facets 22 and triangular shaped facets 24 .
- Crown 12 also includes pentagonal front and rear facets 26 (only the front facet being shown) and opposed planar right and left side facets 28 (only the right side facet being shown), the latter each having a facet surface or face 28 a and a generally curved upper edge 28 b . Only at side 27 of side facets 26 is upper edge 28 b non-curved. Right and left side facets 28 are substantially larger than facets 20 located on multi-faceted crown surface 15 . These side facets have a height H 3 (measured from apex 28 c of upper edge 28 b to the beginning of pavilion 14 ) and a width W 3 (in this embodiment, W and W 3 are the same).
- H 3 is in the range of between 20% to 85% of W since above 85% sufficient light will not refract through the gemstone and below 20% the gemstone will be overpowered by its setting.
- Multi-faceted crown surface 15 has front and rear edges 17 a and 17 b , respectively, and right and left side edges 17 c and 17 d .
- front and rear edges 17 a and 17 b are straight and right and left side edges 17 c and 17 d are curved (see FIG. 1A ), the latter because the opposed planar side facets 28 are inwardly directed one to the other as they run from the multi-faceted crown surface 15 towards the bottom of the gemstone.
- First multi-faceted crown surface portion 16 and second multi-faceted crown surface portion 18 divide multi-faceted crown surface 15 into two parts along a boundary line or peak 30 which bisects the multi-faceted crown surface. Peak 30 arcuately runs in a lateral direction along the crown from substantially the front to the back of the gemstone.
- Peak 30 has an apex 30 a which is located halfway between the front and back of crown 12 .
- first multi-faceted crown surface portion 16 slopes downwardly defining a first crown angle a which advantageously is in the range from 0° to 20°.
- second multi-faceted crown surface portion 18 slopes downwardly in the opposite direction defining a second crown angle b which also may be in the range from 0° to 20°. It has been found that in angles greater than 20° the continuous diamond look is compromised.
- first crown angle a and second crown angle b are equal angles.
- the slope of first multi-faceted crown portion 16 is the same as the slope of second multi-faceted crown portion 18 , but the latter is a positive slope and the former is a negative slope.
- multi-faceted crown surface 15 is curved front-to-back, once again because the opposed planar side facets 28 are inwardly directed one to the other as they run from the multi-faceted crown surface 15 to pavilion 14 , with the curve generally conforming to the upper edges 28 b of side facets 28 . That is, side edges 17 c and 17 d define generally curved upper edge 28 b of side facets 28 . Because there is no table, the curve of multi-faceted crown surface 15 is substantially continuous, that is, crown surface 15 curves substantially continuously from front edge 17 a to rear edge 17 b .
- the height H 1 of crown 12 is in the range of between 50% and 85% of the W of gemstone 10 since above 85% sufficient light will not refract through the gemstone and below 50% the gemstone will be overpowered by its setting.
- upper-most edge 29 of multi-facet crown surface 15 has segments that are generally parallel to the segments of front edge 17 a and rear edge 17 b of multi-faceted crown surface 15 . That is, both upper-most edge 29 and front and rear edges 17 a and 17 b correspond to first crown angle a and second crown angle b, respectively.
- gemstone 10 also includes pavilion 14 , having a height H 2 which is advantageously in the range of between 25% and 50% of gemstone width W. Above 50% the gemstone will be overpowered by its setting and below 25% difficulties are encountered in setting the gemstone.
- pavilion 14 is also multi-faceted to maximize the internal brilliance of the gemstone.
- pavilion 14 is formed with a plurality of straight or parallel facets 32 , a plurality of triangular facets 34 , a plurality of curved facets 36 and a plurality of trapezoidal facets 38 .
- upper-most edge 29 of multi-faceted crown surface portion 40 is a generally horizontal, as is front edge 17 a , with both these edges parallel one to the other.
- the crown also includes front and rear facets 33 which are relatively narrow and trapezoidal in shape.
- multi-faceted crown surface 15 has two peaks 30 formed by two angled first and second multi-faceted crown surface portions 16 and 18 which are separated by a horizontal multi-faceted crown surface portion 40 .
- upper-most edge 29 of multi-faceted crown surface portion 15 is generally parallel to the front edge 17 a and rear edge 17 b of multi-faceted crown surface portion 15 , with the front edge 17 a sloped upwardly (a positive slope), horizontal (zero slope) and sloped downwardly (negative slope), left to right, as viewed in FIG. 3B .
- Rear edge 17 b is similarly sloped but at the rear of the gemstone.
- crown 12 has front and rear hexagonal crown facets 42 formed of front and rear edges 17 a and 17 b and having a bottom edges corresponding to a top edge 39 of trapezoidal facet 38 on pavilion 14 and having narrow side edges.
- FIGS. 4A-4D show a fourth embodiment of the invention.
- the gemstone also has a first crown angle a and a second crown angle b.
- the right and left side edges 17 c and 17 d of multi-faceted crown surface 15 are straight and not curved when the gemstone is viewed from the top because the opposed side facets 28 are substantially vertical as they run from the multi-faceted crown surface 15 to pavilion 14 .
- W 3 and W are not the same, with W 3 being in the range of 50% to 100% that of W (when W 3 is 100% of W, the gemstone becomes that shown in the first embodiment).
- multi-faceted crown surface 15 has first multi-faceted crown surface portion 16 and second multi-faceted crown surface portion 18 , separated by peak 30 .
- Rear edge 17 b of first multi-faceted crown surface portion 16 also defines a third crown angle c and a fourth crown angle d is formed by the front edge 17 c of first multi-faceted crown surface portion 16 as is shown in FIG. 4A .
- Third crown angle c and fourth crown angle d both of which may be in the range from 0° to 20°, taper gemstone 10 rear-to-front and front-to-rear, respectively, when viewed from the top of the gemstone.
- rear edge 17 b of second multi-faceted crown surface portion 18 defines a fifth crown angle e and front edge 17 a of crown surface portion 18 defines a sixth crown angle f, which also taper gemstone 10 rear-to-front and front-to-rear, respectively, when viewed from the top of the gemstone. These angles are may be in the range from 0° to 20°.
- third crown angle c, fourth crown angle d, fifth crown angle e and sixth crown angle f are all substantially equal angles one to the other.
- the front of gemstone 10 now includes another boundary line or peak 45 . As shown in FIG.
- peak 45 extends from peak 30 , along front facet 26 of crown 12 , with peak 45 continuing along trapezoidal facet 38 and triangular facet 34 of pavilion 14 .
- Peak 45 essentially bisects these facets into crown facets 26 a and 26 b , pavilion facets 38 a and 38 b and pavilion facets 34 a and 34 b .
- These facets, along with curved pavilion facets 36 a (the other curved pavilion facet not being shown in FIG. 4D ) are disposed at crown angles d and f, respectively.
- fourth crown angle d and sixth crown angle f are 0°.
- the straight right and left side edges 17 c and 17 d of gemstone 10 taper from back-to-front. This is because opposed side facets 28 are inwardly directed one to the other as they run from the rear to the front of gemstone 10 .
- This taper forms seventh crown angle g and eighth crown angle h. These angles are in the range of 45° to 90° (the latter providing a gemstone without taper of the right and left gemstone sides).
- FIG. 6A illustrates a gemstone 10 according yet another embodiment of the invention in which the gemstone is tapered from left to right.
- right side edge 17 c is shorter than left side edge 17 d .
- the width W 1 of the gemstone on the left side is greater than the width W 2 of the gemstone on the right side.
- the taper percentage, W 2 /W 1 may range from 75% to 100%, with the lower percentage indicative of the greatest taper and the highest percentage having no taper.
- FIG. 7B the cross section of gemstone 10 looking along line 7 - 7 of FIG. 7A , shows that the cross section of gemstone 10 may also be varied.
- FIG. 7B shows that the cross section of gemstone 10 may also be varied.
- FIGS. 8-12 show gemstone 10 of the present invention, previously described with respect to the first embodiment, mounted on a piece of jewelry such as a wedding ring 44 . More specifically, a plurality of gemstones 10 are mounted side-by-side along the outer periphery 46 of a circular metal band 45 .
- Band 45 includes a series of straight and parallel rails 48 and a plurality of gemstone receiving openings 50 sized to receive the gemstones.
- Gemstone receiving opening 50 includes inwardly directed flanges 52 which cooperate with and fit into notches 54 defined along the front and rear of pavilion 14 thereby keeping the gemstone in place.
- circular band 45 includes periphery walls 56 . These walls flex outwardly slightly enabling gemstone 10 to snap fit into place.
- Each gemstone 10 is cut such that when the gemstone is inserted into its gemstone receiving opening 50 , the sides of adjacent gemstones abut each other. More specifically and as shown in part in FIG. 12 , facet face 28 a of right side facet 28 abuts facet face 28 a of left side facet 28 of the adjacent gemstone and facet face 28 a of left side facet 28 abuts facet face 28 a of right side facet 28 of the other adjacent gemstone.
- FIG. 10 shows all of gemstones 10 in place along the outer periphery 46 of circular band 45 forming a completed wedding ring 44 . It will be appreciated that after setting gemstones 10 into circular band 45 , the gemstones give the appearance of one single diamond which forms wedding ring 44 . In this regard, the joints 58 between adjacent gemstones formed at the upper edges 28 b of abutting side facets 28 are not readably visible nor is the outer periphery 46 of circular metal band 45 . This provides a pleasing aesthetic appearance for the wedding ring.
- the present invention provides a multi-faceted gemstone having a new diamond cut that can be used on pieces of jewelry enabling the gemstones to provide a continuous diamond look.
- the diamond cut also provides an enhanced aesthetic look for the jewelry piece.
- the multi-faceted gemstone is particularly adapted to abut corresponding like gemstones so that when the gemstones are mounted on a piece of jewelry, the joints between adjacent gemstones are not readily visible.
- the gemstones may also be mounted to form other pieces of jewelry such as, by way of example, earrings, pendants, necklaces and bracelets.
- the gemstone need not be diamond. It can be another precious stone or even a non-precious stone.
Landscapes
- Adornments (AREA)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/845,856 US20120024009A1 (en) | 2010-07-29 | 2010-07-29 | Multi-faceted gemstone for multi-stone jewelry item |
EP10197039.0A EP2412266B1 (en) | 2010-07-29 | 2010-12-27 | Multi-faceted gemstone for multi-stone jewelry item |
CN201010624197.8A CN102342635B (zh) | 2010-07-29 | 2010-12-29 | 用于多宝石珠宝件的多琢面宝石 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/845,856 US20120024009A1 (en) | 2010-07-29 | 2010-07-29 | Multi-faceted gemstone for multi-stone jewelry item |
Publications (1)
Publication Number | Publication Date |
---|---|
US20120024009A1 true US20120024009A1 (en) | 2012-02-02 |
Family
ID=44741163
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/845,856 Abandoned US20120024009A1 (en) | 2010-07-29 | 2010-07-29 | Multi-faceted gemstone for multi-stone jewelry item |
Country Status (3)
Country | Link |
---|---|
US (1) | US20120024009A1 (zh) |
EP (1) | EP2412266B1 (zh) |
CN (1) | CN102342635B (zh) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20140289690A1 (en) * | 2013-03-21 | 2014-09-25 | Synopsys, Inc. | On-chip-variation (ocv) and timing-criticality aware clock tree synthesis (cts) |
USD738777S1 (en) | 2015-05-14 | 2015-09-15 | Nirav Modi | Jewelry design |
USD753537S1 (en) | 2015-05-15 | 2016-04-12 | Nirav Modi | Jewelry design |
USD758240S1 (en) | 2015-06-02 | 2016-06-07 | Firestar Diamond, Inc. | Jewelry design |
USD779370S1 (en) | 2015-05-14 | 2017-02-21 | Nirav Modi | Jewelry design |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3001366B1 (fr) * | 2013-01-30 | 2015-10-30 | Atelier Vendome L | Element decoratif comprenant plusieurs pierres assemblees dans un cadre ferme, comportant deux faces decoratives |
EP3045069A1 (fr) * | 2015-01-16 | 2016-07-20 | Cartier International AG | Pierre taillée et support comportant une telle pierre taillée |
CN106455771A (zh) * | 2015-06-05 | 2017-02-22 | 马克·臧希 | 手链 |
CH717995A1 (fr) * | 2020-10-28 | 2022-04-29 | Richemont Int Sa | Pierre taillée pour pièce de bijouterie, de joaillerie ou d'horlogerie. |
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2010
- 2010-07-29 US US12/845,856 patent/US20120024009A1/en not_active Abandoned
- 2010-12-27 EP EP10197039.0A patent/EP2412266B1/en not_active Not-in-force
- 2010-12-29 CN CN201010624197.8A patent/CN102342635B/zh not_active Expired - Fee Related
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20140289690A1 (en) * | 2013-03-21 | 2014-09-25 | Synopsys, Inc. | On-chip-variation (ocv) and timing-criticality aware clock tree synthesis (cts) |
USD738777S1 (en) | 2015-05-14 | 2015-09-15 | Nirav Modi | Jewelry design |
USD779370S1 (en) | 2015-05-14 | 2017-02-21 | Nirav Modi | Jewelry design |
USD753537S1 (en) | 2015-05-15 | 2016-04-12 | Nirav Modi | Jewelry design |
USD758240S1 (en) | 2015-06-02 | 2016-06-07 | Firestar Diamond, Inc. | Jewelry design |
Also Published As
Publication number | Publication date |
---|---|
CN102342635A (zh) | 2012-02-08 |
EP2412266B1 (en) | 2014-10-15 |
EP2412266A3 (en) | 2013-03-20 |
CN102342635B (zh) | 2015-06-24 |
EP2412266A2 (en) | 2012-02-01 |
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Owner name: FIRESTONE, INC., NEW YORK Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:MODI, NIRAV;REEL/FRAME:025010/0765 Effective date: 20100916 |
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Owner name: FIRESTAR DIAMOND, INC., NEW YORK Free format text: CHANGE OF NAME;ASSIGNOR:FIRESTONE, INC.;REEL/FRAME:026498/0731 Effective date: 20110328 |
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