EP3068254A2 - Pierre précieuse ayant l'apparence d'une étoile - Google Patents

Pierre précieuse ayant l'apparence d'une étoile

Info

Publication number
EP3068254A2
EP3068254A2 EP14809746.2A EP14809746A EP3068254A2 EP 3068254 A2 EP3068254 A2 EP 3068254A2 EP 14809746 A EP14809746 A EP 14809746A EP 3068254 A2 EP3068254 A2 EP 3068254A2
Authority
EP
European Patent Office
Prior art keywords
gemstone
facets
group
crown
angle
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.)
Granted
Application number
EP14809746.2A
Other languages
German (de)
English (en)
Other versions
EP3068254B1 (fr
Inventor
Christian Loinger
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.)
D Swarovski KG
Original Assignee
D Swarovski KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by D Swarovski KG filed Critical D Swarovski KG
Publication of EP3068254A2 publication Critical patent/EP3068254A2/fr
Application granted granted Critical
Publication of EP3068254B1 publication Critical patent/EP3068254B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
    • A44C17/00—Gems or the like
    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
    • A44C17/00—Gems or the like
    • A44C17/001—Faceting gems
    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
    • A44C17/00—Gems or the like
    • A44C17/02—Settings for holding gems or the like, e.g. for ornaments or decorations
    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
    • A44C17/00—Gems or the like
    • A44C17/04—Setting gems in jewellery; Setting-tools
    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
    • A44C17/00—Gems or the like
    • A44C17/007—Special types of gems

Definitions

  • the present invention relates to a gemstone with a star-shaped appearance with the features of the preamble of claim 1 and an arrangement with such a gemstone.
  • the material areas between the rays of the star must be removed from an example, 5-cornered basic shape of a stone.
  • a gemstone with a chaton section has a crown, also called upper part, with a defined number of lateral facets (crown facets) and a flat board, as well as a pavilion, also called lower part, with a defined number of facets (pavilion facets) on.
  • the opposite end of the chalkboard can be designed as a tip or as a rounded tip in the form of a so-called caliber.
  • Rondiste peripheral edge
  • the gemstone can be ground symmetrically or asymmetrically.
  • the light yield is a measure of how much light that strikes the gemstone from a predefined, relatively wide solid angle range, in a relatively narrow (opening angle 3 °) directed solid angle range on the viewer substantially along the symmetry axis of the Stein falls back.
  • the light output is based on countless internal light reflections. These light reflections are caused by the individual facets, which stand in special angular relationships characterizing the respective cut.
  • EP 2 505 096 A1 For the calculation of the luminous efficiency, reference is made to EP 2 505 096 A1.
  • the gemstone according to EP 2 505 096 A1 has a particularly high luminous efficacy.
  • As a contrast between light and dark appearing areas of the gemstone the ratio of the light output in the lighter areas minus the light output in the darker areas, broken by the light output in the lighter areas understood. If you multiply this value by 100, you get the contrast in percent.
  • Contrast (Luminous efficiency in the lighter areas minus light output in the darker areas) / Luminous efficacy in the brighter areas.
  • a uniform light output (“Light Return") is sought over the entire stone surface. Gemstones according to the prior art therefore have no star-shaped appearance.
  • the gemstone has a crown with a plurality of crown facets, and a first group of tapered to a Rondiste crown facets an angle ⁇ of 22.5 ° ⁇ 3 °, preferably 22.5 ° ⁇ 2 ° to the Rondistenebene has and a second group of crown facets, which adjoin with their broad side of the Rondiste, an angle ß of 34 ° ⁇ 3 °, preferably 34 ° ⁇ 2 ° to the Rondistenebene, resulting solely by the so-achieved course of light intensity a star-shaped appearance of the gem without the removal of material required by the prior art.
  • the gemstone has a pavilion with a multiplicity of pavilion facets, wherein a first group of facet pavilion facets tapering towards a rondist makes an angle of 43.5 ° ⁇ 3 °, preferably 43 ° , 5 ° ⁇ 2 ° to the rondistine plane and a second group of Pavilion facets with their broadside adjacent to the rondis, an angle of 50 ° ⁇ 3 °, preferably 50 ° ⁇ 2 ° to the Rondistenebene has.
  • the gemstone has a pentagonal outline in plan view.
  • the gemstone consists of a transparent to the visible spectrum of the light material and has a refractive index of 2.0 to 2.4.
  • the gem consists of cubic zirconia ("cubic zirconia").
  • the contrast of the luminous efficacy between the first group of facets tapering towards the rim strip and the second group of facets tapering toward the middle is determined in each case at a radially outwardly measured from the longitudinal axis of the gemstone Position of two-thirds of the radius of a circumference surrounding the outline of the gem in the respective bisector of each facet is at least 50%.
  • a socket is provided for the gem, then it is preferably provided that the prongs of the socket, which serve to fix the gem, are arranged in the region of that group of facets which adjoin with their broad side of the Rondiste. Due to the inventive design of the facets of the gemstone in the area of those facets appears darker, with its broad side adjacent to the Rondiste. By covering the darker appearing areas of the gem the star-shaped impression is enhanced. Further advantages of the invention will become apparent from the figures and the accompanying description of the figures. Showing: Views of an embodiment of the invention from different perspectives,
  • a schematic representation for defining the position of the facet angle is a diagram for illustrating the light yield for a straight section through the gemstone of FIG. 5 is a representation for illustrating the position of the measuring line for the
  • Diagram of the luminous efficacy (“Light Return”) in FIG. 4 is a diagram for illustrating the light output ("Light Return”) for a
  • Section through the gemstone along a circle of FIG. 7 is a representation for illustrating the position of the measuring line for the
  • Fig. 1 a shows an embodiment of a gemstone 1 according to the invention in a side view.
  • the Rondiste is that area between the crown and pavilion, where the stone has its largest cross-sectional dimension.
  • the Rondistenebene E is shown, that is the plane whose normal vector is parallel to the longitudinal axis L of the stone and in which the gemstone has its largest cross-sectional dimension.
  • Fig. 1 b shows a gemstone 1 according to the invention in a further side view.
  • Fig. 1 c shows a gemstone 1 according to the invention in a plan view of the crown 2. It can be seen two types of crown facets 6, 7. It border five Kronenfacetten 6 with its tip to the Rondiste. Another five crown facets 7 border with a broadside on the Rondiste 4.
  • Fig. 1 d shows a gemstone 1 according to the invention in a further side view.
  • Fig. 1 e shows a gemstone 1 according to the invention in plan view of the pavilion 3.
  • the pavilion 3 has two types of pavilion facets 8, 9.
  • the pavilion facets of group 8 are bounded by their lace to the rondist.
  • Further pavilion facets of group 9 border with a broadside on the Rondiste 4. For the sake of clarity was omitted to provide all facets with reference numerals.
  • FIG. 1f shows a gemstone 1 according to the invention in a perspective view of the crown 2.
  • Fig. 1 g shows a gemstone 1 according to the invention in a further side view.
  • Fig. 2a shows an arrangement of a gemstone according to the invention 1 and a socket 10 and 1 Krappe 1 in cross section.
  • Fig. 2b shows an arrangement of a gemstone 1 and a socket 10 according to the invention in plan view.
  • the frame is designed so that the prongs 1 1 cover the darker areas of the gemstone 1 and so underline the impression of a star.
  • only 2 of the prongs are provided with reference numerals.
  • Fig. 3 shows a schematic representation of a gemstone 1 according to the invention for defining the angular position of the facets to the Rondistenebene E.
  • the angle of a facet to the Rondistenebene is thus measured between the projecting appearing facet and the Rondistenebene.
  • the angles present in the figure do not have to correspond to the values according to the invention.
  • FIG. 4 shows the course of the light yield along an imaginary section A - B through a gemstone, which is designed for comparison as a conventional gemstone or as a gemstone 1 according to the invention, wherein the solid curve shows the course of the luminous efficiency for a conventionally cut gemstone, while the dashed curve represents the course of the luminous efficacy of a gemstone 1 according to the invention
  • the amount of light output in the edge regions is substantially smaller than in a conventionally ground gemstone gemstone according to the invention, the contrast between the luminous efficacy in the region of one of the rays of the star and in the area between two rays of the star greater than in the prior art.
  • FIG. 5 shows the position L 'of the measuring line AB for the diagram of the luminous efficiency ("light return") in FIG. 4.
  • the measuring line lies approximately at half the height of the triangle CDE, where the height between C and the base DE is meant is.
  • FIG. 7 shows the position L "of the measuring line E-F along a circle for the diagram of the light yield (" light retum ”) in FIG. 6.
  • the measuring line E-F is located on a center circle with respect to the center on a measured from the inside outward position of about two-thirds of the radius of a circumference of the gemstone (1) surrounding the circumference.
  • FIG. 8 is a diagram illustrating light rays emerging from a gemstone for the light-return diagram in FIGS. 4 and 6.
  • FIG. 9a shows a photographic representation of a gemstone 1 according to the invention.
  • the darker areas between the symmetry axes can clearly be seen. This results in the gemstone 1 of the invention, the visual impression of a star.
  • Fig. 9b shows a photographic representation of a gem stone according to the prior art, in which no visual impression of a star is formed.

Landscapes

  • Adornments (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

L'invention concerne une pierre précieuse (1) ayant l'apparence d'une étoile. La pierre précieuse (1) comporte une couronne (2) pourvue d'une pluralité de facettes. Un premier groupe (6) de facettes de couronne, qui se rétrécissent en direction d'un cercle (4) forme un angle (α) de 22,5° ± 3°, de préférence 22,5° + 2°, par rapport au plan (E) du cercle et un second groupe (7) de facettes de couronne, qui sont adjacentes au niveau de leur côté large au cercle (4), forme un angle (ß) de 34° ± 3°, de préférence 34° ± 2°, par rapport au plan (E) du cercle. L'invention concerne également un agencement comportant une pierre précieuse.
EP14809746.2A 2013-11-15 2014-10-27 Pierre précieuse ayant l'apparence d'une étoile Active EP3068254B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA888/2013A AT515136B1 (de) 2013-11-15 2013-11-15 Schmuckstein mit sternförmigem Erscheinungsbild
PCT/AT2014/000192 WO2015070266A2 (fr) 2013-11-15 2014-10-27 Pierre précieuse ayant l'apparence d'une étoile

Publications (2)

Publication Number Publication Date
EP3068254A2 true EP3068254A2 (fr) 2016-09-21
EP3068254B1 EP3068254B1 (fr) 2018-05-23

Family

ID=52020871

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14809746.2A Active EP3068254B1 (fr) 2013-11-15 2014-10-27 Pierre précieuse ayant l'apparence d'une étoile

Country Status (5)

Country Link
US (1) US20160249714A1 (fr)
EP (1) EP3068254B1 (fr)
CN (1) CN105744852B (fr)
AT (1) AT515136B1 (fr)
WO (1) WO2015070266A2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108497638B (zh) * 2017-02-27 2023-12-05 深圳鸳鸯金楼珠宝股份有限公司 钻石及其亭部加工方法、钻石及其亭部结构
EP3378346B1 (fr) * 2017-03-21 2023-01-18 Omega SA Pierre et son procédé de réalisation
TWD195924S (zh) * 2017-09-21 2019-02-11 日商貞松股份有限公司 寶石

Family Cites Families (30)

* Cited by examiner, † Cited by third party
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US3788097A (en) * 1971-03-30 1974-01-29 Colorant Schmuckstein Gmbh Fa Brilliant having plural rings of facets, each having an odd number of facets
US5072549A (en) * 1986-09-22 1991-12-17 Harold Johnston Method of cutting gemstones and product
USD375914S (en) * 1994-07-05 1996-11-26 Fancoldi, R.T. Diamond
DE19734036A1 (de) * 1997-08-06 1999-02-11 Helmut Buerger Verfahren zur Festlegung eines Edelsteinschliffs mit hoher Reflektion, Verfahren zum Schleifen eines Edelsteins mit hoher Reflektion sowie geschliffener Edelstein mit hoher Reflektion
USD411133S (en) * 1998-09-01 1999-06-22 Noe Alvarado Hexagon shaped diamond
US6430963B1 (en) * 2000-08-30 2002-08-13 Simka Diamonds Corporation Diamond cut
IL146079A (en) * 2001-10-19 2004-06-20 Michael Kedem Rounded precious stone
US6578380B1 (en) * 2002-01-24 2003-06-17 Diaco Hexagonal brilliant cut diamond
USD481327S1 (en) * 2002-06-04 2003-10-28 Nelson Jewellery Arts Company Ltd. Pentagonal cutting diamond
US6990833B2 (en) * 2002-09-23 2006-01-31 Smith Allen L Faceted circular cut diamond
CN1223442C (zh) * 2002-12-17 2005-10-19 全球股份有限公司 宝石饰品、钻石及方形锆及它们的切割方法
US20050011226A1 (en) * 2003-07-14 2005-01-20 David So Precious stone cut and method of making
US20050081563A1 (en) * 2003-08-18 2005-04-21 Yair Riemer Gemstone cut
US7225642B2 (en) * 2003-09-09 2007-06-05 Simka Diamonds Diamond cut
US20050144980A1 (en) * 2004-01-05 2005-07-07 Robert Shaw Setting for diamonds or diamond shaped stones
USD513393S1 (en) * 2004-04-28 2006-01-03 Gitanjali Gems Limited Jupiter cut jewel
US20060026991A1 (en) * 2004-07-20 2006-02-09 Naotake Shuto Method for cutting diamond and diamond proportion
USD550116S1 (en) * 2004-12-02 2007-09-04 Mordechay Torgeman Gemstone
US20070261440A1 (en) * 2006-05-09 2007-11-15 Mark Webb Liberty cut gemstone
US20150052947A9 (en) * 2006-08-08 2015-02-26 Zev W. Weitman Gemstone cut
JP2008054838A (ja) * 2006-08-30 2008-03-13 Komiya:Kk ダイアモンド
USD567138S1 (en) * 2007-05-04 2008-04-22 Sundiamond Usa, Corp. Hexagon shaped diamond or similar article
US8353181B2 (en) * 2007-05-04 2013-01-15 Worldwide Diamond Trademarks Ltd. Heart shaped diamond cut having hearts and arrows pattern
JP3138424U (ja) * 2007-06-01 2008-01-10 ヴァーグ株式会社 ７２面カットのプロポーションのダイヤモンド
JP2009100857A (ja) * 2007-10-22 2009-05-14 Nidec Sankyo Corp 装飾品
US20110016918A1 (en) * 2008-01-09 2011-01-27 Hohoemi Brains, Inc. Ornamental diamond having two-stage pavilion
US20120079853A1 (en) * 2010-10-01 2012-04-05 Blasbichler Guenther Gem with brilliant cut
AT12644U1 (de) * 2011-03-07 2012-09-15 Swarovski D Kg Brilliantschliff
US20130291589A1 (en) * 2012-05-03 2013-11-07 Anthony Ritchie Silicon Carbide Princess Cut Gemstone
US20160166021A1 (en) * 2014-12-11 2016-06-16 Hasenfeld-Stein, Inc. Round cut gemstone exhibiting excellent optical brilliance

Also Published As

Publication number Publication date
CN105744852A (zh) 2016-07-06
WO2015070266A3 (fr) 2015-07-30
AT515136A1 (de) 2015-06-15
AT515136B1 (de) 2016-12-15
CN105744852B (zh) 2018-10-26
US20160249714A1 (en) 2016-09-01
WO2015070266A2 (fr) 2015-05-21
EP3068254B1 (fr) 2018-05-23

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