EP1110472B1 - Gemme taillée, en particulier diamant taillée - Google Patents

Gemme taillée, en particulier diamant taillée Download PDF

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Publication number
EP1110472B1
EP1110472B1 EP00125864A EP00125864A EP1110472B1 EP 1110472 B1 EP1110472 B1 EP 1110472B1 EP 00125864 A EP00125864 A EP 00125864A EP 00125864 A EP00125864 A EP 00125864A EP 1110472 B1 EP1110472 B1 EP 1110472B1
Authority
EP
European Patent Office
Prior art keywords
facets
girdle
fact
gem
cut
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.)
Expired - Lifetime
Application number
EP00125864A
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German (de)
English (en)
French (fr)
Other versions
EP1110472A1 (fr
Inventor
Eve Zimet
Nadine Schmidt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Montblanc Simplo GmbH
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Montblanc Simplo GmbH
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Filing date
Publication date
Application filed by Montblanc Simplo GmbH filed Critical Montblanc Simplo GmbH
Publication of EP1110472A1 publication Critical patent/EP1110472A1/fr
Application granted granted Critical
Publication of EP1110472B1 publication Critical patent/EP1110472B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
    • A44C17/00—Gems or the like
    • A44C17/001—Faceting gems

Definitions

  • the present invention relates to a cut gem consisting of diamond or a stone comprising at least one axis of crystallographic symmetry ternary and a refractive index and a dispersion substantially equal to those of the diamond, comprising a first predetermined number of facets cut in the crown and a second predetermined number of facets cut in the cylinder head around a central geometric axis of symmetry, said facets of the crown and the cylinder head are arranged around said central geometric axis of symmetry in a substantially hexagonal arrangement.
  • GB-A-1.015.389 we reveal gems with a size resembling flowers with eight or sixteen petals of convex shape circular arranged around a central geometric axis.
  • the outer contour can be straight, pointed or sinusoidal.
  • US-D-384,592 illustrates diamond cuts with a flower shape with four petals with rounded outer outline separated by a point-like trough.
  • the object of the present invention is to create a gem of a size new to obtain original optical effects and a design of different shape, while retaining the intensity of the shine and fire of the sizes "Brilliant" known, and while seeking to facilitate the size and increase the accuracy of the latter.
  • the invention is characterized for this purpose by the characteristics appearing in the second part of claim 1.
  • the gem thus cut, sends back to the observer an image with a play of light reflections and six-pointed star differential colorings where the rounded protruding portions separated by rounded hollow portions send shimmering, original optical effects to the observer allowing to obtain a facilitated size and a quality of facet size improved and high accuracy.
  • the invention also relates to a method for cutting a gem, characterized by the fact that all the facets of the crown and cylinder head and then cut the lobed periphery of the rondist by performing the lobed shape with six rounded protruding portions and six rounded intaglio portions.
  • Figures 1, 2 and 3 are top, bottom and side views of a first mode of execution.
  • FIG. 4 represents certain characteristics of the external contour of the first mode executioner.
  • Figures 5, 6 and 7 are top, bottom and side views of a second mode of execution.
  • the cut gem shown in Figures 1 to 3 is a diamond and includes a crown 10 and a cylinder head 11 separated by a rondist 12.
  • the shape geometric cut of this diamond has a hexagonal symmetry with in as a main element of symmetry a hexagonal axis of rotation 14. The facets of the size are therefore arranged around this axis according to an arrangement hexagonal.
  • This axis of geometric symmetry corresponds to one of the axes ternary crystallographic of the crystal structure of the diamond .
  • Table 16 and the plan of the rondist 12 will therefore be parallel to one of the facets of the diamond octahedron gross, which will make it possible to obtain the location of table 16 by cleavage of the rough diamond, avoiding tedious sawing as is generally the case necessary when the table is perpendicular to one of the crystallographic axes of order four of the diamond.
  • the contour 20 of the rondist 12 seen perpendicular to the hexagonal axis 14, as illustrated in FIG. 4, has a lobed shape with six projecting portions rounded 21 and six rounded hollow portions 22.
  • the rondist 12 has a maximum outside diameter D, a minimum inside diameter Di and a diameter medium Dm intermediate.
  • the protruding portions 21 has a radius of curvature r2 which is substantially equal to 0.125 D, while the radius of curvature r3 of recessed portions 22 is substantially equal to 0.062 D.
  • the crown 10 includes a table 16 with a hexagonal outline or substantially hexagonal depending on the size precision.
  • First six facets triangular 25 each share one of their edges with an edge of the table.
  • Six second facets 26 are inserted between the first facets and six third facets 27 share one of their edges with a second edge facets 26 and make the connection with the rondist 12.
  • the cylinder head 11 has six fourth facets 28 and twelve fifths facets 29 arranged near the rondiste on either side of the edges separating the fourth facets, and six sixth facets 30 arranged near the base 31 partially between two neighboring fourth facets 28.
  • the second, third and fourth facets 26, 27, 28, as well as the recessed portions 22 of the rondiste are arranged in a first position identical angular around the hexagonal geometric axis, while the first and sixth facets 25, 30 and the projecting portions 21 are found in a second angular position offset by 30 ° from the first angular position. So there is a predetermined correspondence between the facets of the crown, those of the cylinder head and the outline of the rondiste.
  • the height H of the gem cut between its table and its base is preferably between 0.55 and 0.75 D, advantageously 0.6 D.
  • the height Ht of the crown above the plane of the rondist is preferably 0.13 D, and the height Hc of the cylinder head is preferably 0.47 D.
  • the first 25, respectively second 26, respectively third 27, respectively fourth 28 and sixth facet 30 respectively make angles included between 10 ° and 25 °, respectively 10 ° and 25 °, respectively 25 ° and 35 °, respectively 35 ° to 55 ° and respectively 25 ° to 35 °.
  • the third and fourth facets 27 and 28 on the one hand and on the other of the rondist make an angle of 30 ° and 42 ° with the plane of the rondist 12.
  • the method of cutting this gem firstly involves obtaining of the table, by cleavage parallel to one of the faces of the octahedron and then, after the bruting, the size of the different facets of the crown and the breech.
  • This cut is made of preferably using a laser cutting device.
  • the surfaces of cutting of the rondiste 12 are then polished and cleaned until all traces of carbon black spots due to laser burns have missing.
  • the weight of the cut diamond retains about 25 to 30% of the weight of the cut diamond. rough diamond; this size therefore does not have a high yield.
  • diamonds cut according to this size allow to obtain total reflections internal with hexagonal and lobed image structure and shape, which gives the gem new and original optical effects.
  • This symmetry hexagonal combined with total internal reflections on the facets of the breech and a differential refraction on the facets of the crown allows obtain a remarkable and original fire due to its hexagonal distribution and peripheral lobes.
  • the second embodiment illustrated in FIGS. 5 to 7 also includes a crown 10 and a cylinder head 11 separated by a rondist 12.
  • the assembly also has a hexagonal geometric shape with an axis of symmetry hexagonal central 14 around which the facets are arranged in a hexagonal symmetry.
  • the axis of geometric symmetry can preferably also corresponds to one of the ternary axes of symmetry of the structure diamond crystallography.
  • Rondiste 12 also has a lobed shape with six rounded projecting portions 21 and six rounded recessed portions 22, the radii of curvature can be similar to those of the first embodiment.
  • the crown 10 has here, instead of a table, an apex 50 formed by six first triangular facets 55 arranged in a first position angular around the hexagonal geometric axis 14.
  • Six second facets 56 are arranged in a middle position along a second angular position offset by 30 ° from the first angular position and six third facets 57 arranged near the rondist according to the first angular position.
  • the breech 12 has twelve fourth facets 58 arranged near the rondist 12 and twelve fifth facets 59 forming the base 61 and arranged each between two fourth facets in an angular position offset by 15 ° compared to that of the fourth facets.
  • the recessed portions 22, the first and the third facets 55, 57 and half 58a of the fourth facets are arranged in the first position angular.
  • the projecting portions 21, the second facets 56 and the other half 58B fourth facets are arranged in the second angular position.
  • the height H between the apex 50 and the base 61 is between 0.5 and 0.75 times the outside diameter D of the rondist 12.
  • this height H, that Ht of the crown and that Hc of the cylinder head are 0.52 D, 0.18 D and 0.35 D.
  • the first 55, respectively second 56, respectively third 57, respectively fifth facets 59 do with the plane of the rondist of angles between 8 ° and 20 °, respectively 20 ° and 27 °, respectively 20 ° and 32 °, respectively 30 ° to 50 °.
  • second and fifth facets 56 and 59 on either side of the rondist make a 23 ° and 34 ° angle with the plane of the rondist 12.
  • the cutting process is similar in that the facets are first cut of the crown 10 and of the cylinder head 11 around the hexagonal axis 14, which corresponds to the crystallographic ternary axis of the diamond, and that we then cut the lobed perimeter of the rondiste preferably with a laser.
  • the embodiments described above do not have no limiting nature and that they can receive any modifications desirable within the framework as defined by claim 1.
  • the cutting according to the invention can also be carried out on other stones and gems with similar refractive index and dispersion, or roughly equal to that of diamond. It may be necessary to adapt the angles of inclination of the facets taking into account the refractive indices of the substitute stones. Thus, the angles of the facets can also be changed according to the shape of the rough stones. Other additional facets can be added. These facets may only be as appropriate number of three per type of facets. The cutout of the rounder may also be obtained by any other suitable means.

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  • Adornments (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
EP00125864A 1999-12-23 2000-11-25 Gemme taillée, en particulier diamant taillée Expired - Lifetime EP1110472B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH237099 1999-12-23
CH02370/99A CH693938A5 (fr) 1999-12-23 1999-12-23 Gemme taillée, en particulier diamant taillé.

Publications (2)

Publication Number Publication Date
EP1110472A1 EP1110472A1 (fr) 2001-06-27
EP1110472B1 true EP1110472B1 (fr) 2004-07-28

Family

ID=4232186

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00125864A Expired - Lifetime EP1110472B1 (fr) 1999-12-23 2000-11-25 Gemme taillée, en particulier diamant taillée

Country Status (8)

Country Link
US (1) US6405562B1 (zh)
EP (1) EP1110472B1 (zh)
JP (1) JP3569492B2 (zh)
CN (1) CN1188262C (zh)
CH (1) CH693938A5 (zh)
DE (1) DE60012463T2 (zh)
ES (1) ES2222148T3 (zh)
HK (1) HK1037308A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3378346B1 (fr) * 2017-03-21 2023-01-18 Omega SA Pierre et son procédé de réalisation

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JP3863374B2 (ja) * 2001-01-22 2006-12-27 尚丈 首藤 ダイヤモンドのカット方法及びプロポーション
US20030192347A1 (en) * 2002-04-15 2003-10-16 Hadar Yaskil Gemstone
US20040050097A1 (en) * 2002-09-12 2004-03-18 Baruch Eisenberg Enhanced diamond and method for making same
US6990833B2 (en) * 2002-09-23 2006-01-31 Smith Allen L Faceted circular cut diamond
JP4302964B2 (ja) * 2002-11-01 2009-07-29 株式会社ほほえみブレインズ 四辺形ブリリアントカットをしたダイヤモンド
RU2296662C2 (ru) * 2003-05-30 2007-04-10 Арвиндбхай Лавджибхай ПАТЕЛ Новый лазерный станок для огранки
US20050011226A1 (en) * 2003-07-14 2005-01-20 David So Precious stone cut and method of making
JP4733914B2 (ja) * 2003-08-29 2011-07-27 東京真珠株式会社 宝石及びそのカッティング方法
CN100386043C (zh) * 2003-09-12 2008-05-07 深圳市真诚美珠宝有限公司 圆明亮式琢型钻石及其切割方法
US20060101977A1 (en) * 2004-11-15 2006-05-18 Namiki Seimitsu Houseki Kabushiki Kaisha Diamond scriber
RU2407049C2 (ru) * 2004-11-24 2010-12-20 Кэнон Кабусики Кайся Контейнер подачи проявителя
CN101234515B (zh) * 2007-01-29 2012-04-25 浙江新光饰品股份有限公司 一种仿真人造钻石的切割方法
JP2009142455A (ja) * 2007-12-14 2009-07-02 Juho:Kk ダイヤモンドおよびダイヤモンド形状の宝飾品およびそのカット方法
US20090260396A1 (en) * 2008-04-16 2009-10-22 Eitan Broukman Methods for processing ornamental diamonds and corresponding ornamental diamonds
US20120060557A1 (en) * 2009-02-20 2012-03-15 Van Looveren Eva Cut Product, in Particular Diamond, with Improved Characteristics and Method for Manufacturing Such a Product
BE1018665A5 (nl) * 2009-02-20 2011-06-07 Diamscan N V Product met verbeterde optische karakteristieken.
USD697676S1 (en) * 2010-10-18 2014-01-14 Kyle Hansen Star-shaped pet treat dispensing puzzle
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 (zh) * 2013-02-26 2015-01-21 张坤芝 内部呈现十心十箭结构的81刻面的钻石
JP5788562B1 (ja) * 2014-05-01 2015-09-30 株式会社タスコ 宝石
US9226554B2 (en) 2014-05-12 2016-01-05 Yoshihiko Kodama Circular cut diamond
JPWO2016039335A1 (ja) * 2014-09-08 2017-07-13 太田　貴之 成形品
FR3028725B1 (fr) * 2014-11-24 2017-01-13 Vuitton Louis Sa Gemme taillee et article comportant une telle gemme
USD765182S1 (en) 2015-02-12 2016-08-30 LeRoy Juarez Archery target
USD901324S1 (en) 2015-04-22 2020-11-10 Shenzhen Perfect Love Diamond Co., Ltd. Diamond with eighty-one facets
US20180042344A1 (en) * 2016-08-15 2018-02-15 Idd Limited Gemstone
USD824798S1 (en) * 2017-01-10 2018-08-07 A.V. Jewelry Of Ny Ltd. Diamond jewelry
US10893727B2 (en) * 2018-08-27 2021-01-19 Diffraction Grating Services Llc Faceted gemstone with enhanced color dispersion and diminished haze
CN108851399B (zh) * 2018-09-21 2020-03-31 恒信玺利实业股份有限公司 一种钻石
BE1026807B1 (nl) * 2018-11-27 2020-07-01 Walter Paul Aerts Geslepen diamant
EP3705222B1 (en) * 2019-03-06 2022-01-26 Synova S.A. Method and apparatus for manufacturing a workpiece into a product through laser processing
CL2021000204S1 (es) * 2020-07-31 2021-06-18 Vuitton Louis Sa Piedra preciosa.
CN113263417B (zh) * 2021-05-07 2023-06-20 上海豫园珠宝时尚集团有限公司 一种钻石的切割方法及钻石
USD1040009S1 (en) * 2023-08-01 2024-08-27 Fullord S.A.R.L. Precious stone
USD1040010S1 (en) * 2023-09-22 2024-08-27 Fullord S.A.R.L. Precious stone
USD1025822S1 (en) * 2023-09-25 2024-05-07 Swarovski Aktiengesellschaft Glassware

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USD384592S (en) * 1996-03-14 1997-10-07 Jacob Siman-Tov Flower-shaped cut diamond

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FR323618A (fr) 1902-08-09 1903-03-10 A M I Tolkowsky Nouvelle forme de diamant, dite "diamond star"
AT242416B (de) 1964-01-16 1965-09-10 Swarovski & Co Schmuckstein mit Blütenform
CH684301A5 (de) 1991-03-19 1994-08-31 Diamine S A Schliff-Form für Edelsteine.
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US5882786A (en) * 1996-11-15 1999-03-16 C3, Inc. Gemstones formed of silicon carbide with diamond coating
USD390155S (en) * 1997-04-08 1998-02-03 Guy Couture Butterfly gem cut
USD442880S1 (en) * 1999-12-23 2001-05-29 Montblanc-Simplo Gmbh Cut gemstone, in particular cut diamond

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Publication number Priority date Publication date Assignee Title
USD384592S (en) * 1996-03-14 1997-10-07 Jacob Siman-Tov Flower-shaped cut diamond

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3378346B1 (fr) * 2017-03-21 2023-01-18 Omega SA Pierre et son procédé de réalisation

Also Published As

Publication number Publication date
DE60012463D1 (de) 2004-09-02
US6405562B1 (en) 2002-06-18
EP1110472A1 (fr) 2001-06-27
JP3569492B2 (ja) 2004-09-22
CH693938A5 (fr) 2004-05-14
JP2001204520A (ja) 2001-07-31
DE60012463T2 (de) 2005-09-15
ES2222148T3 (es) 2005-02-01
CN1307961A (zh) 2001-08-15
HK1037308A1 (en) 2002-02-08
CN1188262C (zh) 2005-02-09

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