EP2436281A1 - Pierre décorative dotée d'une taille brillante - Google Patents

Pierre décorative dotée d'une taille brillante Download PDF

Info

Publication number
EP2436281A1
EP2436281A1 EP11007879A EP11007879A EP2436281A1 EP 2436281 A1 EP2436281 A1 EP 2436281A1 EP 11007879 A EP11007879 A EP 11007879A EP 11007879 A EP11007879 A EP 11007879A EP 2436281 A1 EP2436281 A1 EP 2436281A1
Authority
EP
European Patent Office
Prior art keywords
angle
gemstone
crown
facets
pavilion
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.)
Withdrawn
Application number
EP11007879A
Other languages
German (de)
English (en)
Inventor
Günther Blasbichler
Karlheinz Eder
Markus Sauer
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 EP2436281A1 publication Critical patent/EP2436281A1/fr
Withdrawn legal-status Critical Current

Links

Images

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 invention relates to a gemstone with a brilliant cut.
  • the so-called brilliant cut has been found to be particularly aesthetic, as through this the so-called "fire” of the diamond, which is based on innumerable internal light reflections, comes particularly well. These light reflections are caused by the individual facets, which stand in special angular relationships characterizing the respective cut.
  • the cut of a gemstone, especially a diamond is thus crucial to the fire produced.
  • a gemstone with a brilliant cut has a crown, also called upper part, with at least 32 facets and a blackboard, and a pavilion, also called lower part, with at least 24 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. Between the upper and lower part of the so-called Rondiste is arranged. The gemstone is ground symmetrically.
  • the object of the invention is to further improve the aesthetic impression of a gemstone with a brilliant cut, for example by an increased light output or an increased luminance or brightness.
  • the gemstone has a brilliant cut, in which the crown angle between 32.8 ° and 33 °, surprisingly, a particularly high luminous efficacy has resulted, whereby the fire, the scintillation and the brilliance of the gem come particularly well.
  • the crown angle is that angle which results in a side view of the gemstone between the lateral boundary line of the crown and the rondistine plane, this boundary line resulting from an orthogonal projection of a crown facet on a plane containing the longitudinal axis of the gemstone.
  • the Rondistenebene is that level, which is arranged parallel to the board and in which the gemstone has the largest cross-sectional dimension.
  • the Rondistenebene is aligned perpendicular to the longitudinal direction of the gem.
  • the luminous efficacy or the brightness of the gemstone which corresponds to a reflected light component, is measured with a lighting arrangement and measurement specification developed by the Gemological Institute of America (GIA).
  • the corresponding measuring instructions can be found in the journal " Gems & Gemology ", Case 2004, pp. 202-228 where, in particular on page 219, a measuring arrangement for measuring the brightness of a gemstone is shown.
  • the measurement based on the geometry of the gemstone can also be simulated by calculation.
  • the measurement or the results of the simulation provide values for various characteristic light or radiation-specific sizes of the gemstone, in particular the brightness and / or the luminous efficacy.
  • the lighting device With a hemispherical lighting arrangement with a directed radiation normal to the surface of the located in the center of the base circle gemstone is illuminated.
  • the lighting device generates a Lambertian beam distribution with a sufficiently large section angle, so that lateral facets of the gemstone are illuminated.
  • the amount of light reflected by the gem represents an average over almost all possible illumination arrangements, and thus provides a quantitative measure of the Luminous efficacy or the brightness of the gemstone.
  • the higher the proportion of the reflected or backscattered light the higher the luminous efficacy and the brightness and the better the reflection behavior of the gemstone, which is accompanied by a higher-quality aesthetic feeling.
  • a luminous flux detector For measuring the reflected or backscattered light, a luminous flux detector is used in a very large distance with a narrow measuring field relative to the dimensions of the gemstone.
  • the gazebo angle is between 41.7 ° and 41.9 °.
  • the gazebo angle is that angle which results in a side view of the gemstone between the lateral boundary line of the gazebo and the girdle plane, this gauging line resulting from an orthogonal projection of a gazebo facet on a plane containing the longitudinal axis of the gemstone.
  • the gemstone according to the invention may be made of any natural or synthetic precious or semi-precious stone, a gemstone made of glass or plastic with the brilliant cut according to the invention is possible.
  • the pavilion which is also known as the lower part, has at least 24 pavilion facets, which are brought together in the form of a point or a calette at the opposite end of the panel.
  • eight pavilion facets have a point that is oriented towards the rondist, while sixteen pavilion facets have a broadside that is adjacent to the rondist. That of the broadside opposite lying end of this pavilion facet is pointed converging and directed away from the Rondiste. The orthogonal projection of the latter pavilion facets gives the pavilion angle.
  • the angle between the girdle facet and those gazebo facets having a nib adjacent to the girdle or oriented toward the girdle is between 41.7 ° and 41.9 °. Additionally or alternatively, it may be provided that the angle between the Rondistenebene and those pavilion facets having a broad side adjacent to the Rondiste is between 42.8 ° and 43.0 °.
  • the crown of the gemstone which is also known as the upper part, has a board, bordered by the eight crown facets, each with a broadside. In one embodiment of the invention, these crown facets have an angle of between 20.2 ° and 20.4 ° relative to the rondist plane.
  • the crown has 16 crown facets, which have an adjacent to the Rondiste broadside.
  • the angle of these crown facets to the rondist plane is between 39.3 ° and 39.5 °.
  • the crown has eight other crown facets, each with a point adjacent to the Rondist.
  • the angle between these crown facets and the rondist plane is between 32.8 ° and 33.0 °.
  • the orthogonal projection of the last-mentioned crown facets yields the crown angle.
  • Fig. 1a shows a gemstone 1 according to the invention in a side view.
  • the crown 2 also called upper part of the pavilion 3, also called lower part separates.
  • the Rondiste 4 is that region of the largest cross-sectional dimension of the gem 1. Schematically represented is also the axis of symmetry of the gem in the longitudinal direction, which corresponds to the longitudinal axis of the gem.
  • the pavilion 3 has two types of pavilion facets 8, 9.
  • these pavilion facets 9 converge pointedly in the direction of the vial 6.
  • the remaining pavilion facets 8 have a tip, which is adjacent to the Rondiste 4 respectively.
  • the crown 2 has 32 facets 10, 11, 12 and a panel 5, which is aligned parallel to the Rondistenebene 7.
  • the gem 1 consists of zirconia and has a crown angle ⁇ between the lateral boundary line 16 and the Rondistenebene 7 of 32.9 ° and a gazebo angle ⁇ between the lateral Line 17 and the Rondistenebene 7 of 41.8 °.
  • the angle between the Rondistenebene 7 and the crown facets 12, which adjoin the Rondiste 4 with its broad side, is 39.4 °.
  • the angle between the Rondistenebene 7 and those crown facets 10, which adjoin the panel 5 with its broad side, is 20.3 °.
  • the angle between the Rondistenebene 7 and the remaining crown facets 11 is 32.9 °.
  • the angle between the Rondistenebene 7 and the Pavillonfacetten 9, which adjoin the Rondiste 4 with its broad side, is 42.9 °.
  • the angle between the Rondistenebene 7 and the remaining Pavillonfacetten 8 is 41.8 °.
  • Fig. 1b shows a plan view of the crown 2 of the gem 1.
  • the symmetry of the gemstone 1 can be seen.
  • Fig. 1c shows a view from below of the pavilion 3 of the gem 1.
  • the Kalette 6 which is formed by the adjoining Pavillonfacetten 8, symbolically another coordinate system for representing the symmetry of the gem 1 is shown.
  • Fig. 2 shows a schematic illustration for explaining the crown angle ⁇ formed between the Rondistenebene 7 and the lateral boundary line 16 of the crown 2, while the pavilion angle ⁇ between the lateral boundary line 17 of the pavilion 3 and the Rondistenebene 7 is formed.
  • Fig. 3a shows a gemstone 1 'with a brilliant cut of the prior art.
  • the rays of light 13 entering the gemstone are only partially reflected at the pavilion 3 'because of the angles with which the various pavilion facets are ground, in particular because of the crown angle and the angle of the pavilion.
  • a portion of the rays emerge from the pavilion 3 'in the form of refracted rays 14.
  • the ratio of the light rays 15 exiting the crown 2 'to the light rays 13 entering the crown 2' defines the luminous efficacy.
  • Fig. 3b shows the same representation for a gemstone according to the invention 1. Due to the special geometric arrangement of the various facets and the crown angle ⁇ and the gazebo angle ⁇ , the luminous efficacy is significantly improved, since the majority of rays in the area of the pavilion 3 is totally reflected, so that almost the entire proportion of light rays 13 entering the crown 2 is reflected back to the observer after optionally multiple reflection in the form of light rays 15 emerging from the crown 2.
  • Fig. 4 shows a schematic view of a measuring arrangement for measuring the brightness or luminous efficacy of a gemstone on the basis of the measurement requirements of the article mentioned in the journal "Gems &Gemology".
  • a gemstone 1 arranged in the center of the base circle 17 of the hemisphere 16 is illuminated by light rays 18, so that the crown 2 of the gemstone 1 is irradiated with white, diffused light, the light rays being hemispherical except for a darkened region 19 hit the gemstone 1 and be reflected by this.
  • the base circle 17 is darkened to recess for the gemstone 1, so that from below the base circle 17 no light impinges on the gemstone 1.
  • a region 19 of the hemisphere 16 which lies exactly opposite the gemstone 1 and has an opening angle ⁇ of 46 °. Also from this area no light comes to the gemstone 1.
  • the area 19 has a recess 20 with an opening angle ⁇ of 3 °.
  • This recess 20 serves as a measuring field for a detector. It can thus be arranged above the recess 20, a luminous flux measuring detector. Instead, the respective light-specific values, such as, for example, the brightness in the area of this recess 20, can be calculated in a computer simulation.
  • the amount of light reflected by the gemstone 1 represents an average over almost all possible lighting arrangements and thus gives a quantitative measure of the luminous efficacy or the brightness of the gem 1.
  • the reflections take place on different facets, so that light directly on the first impact on the gem , but is also reflected back to the recess after one of several internal reflections.

Landscapes

  • Adornments (AREA)
EP11007879A 2010-10-01 2011-09-29 Pierre décorative dotée d'une taille brillante Withdrawn EP2436281A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US12/896,105 US20120079853A1 (en) 2010-10-01 2010-10-01 Gem with brilliant cut

Publications (1)

Publication Number Publication Date
EP2436281A1 true EP2436281A1 (fr) 2012-04-04

Family

ID=44773934

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11007879A Withdrawn EP2436281A1 (fr) 2010-10-01 2011-09-29 Pierre décorative dotée d'une taille brillante

Country Status (3)

Country Link
US (1) US20120079853A1 (fr)
EP (1) EP2436281A1 (fr)
JP (1) JP2012075900A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014056008A1 (fr) 2012-10-12 2014-04-17 D. Swarovski Kg Taille pour pierre fine
WO2019072857A1 (fr) 2017-10-09 2019-04-18 D. Swarovski Kg Découpe de pierre précieuse

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130327090A1 (en) * 2011-09-02 2013-12-12 Anthony Ritchie Hearts & Arrows SiC Gemstone
JP5744133B2 (ja) * 2013-08-27 2015-07-01 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． クッションシェイプされたハートアンドアロー宝石原石及び方法
AT515136B1 (de) * 2013-11-15 2016-12-15 Swarovski D Kg Schmuckstein mit sternförmigem Erscheinungsbild
JP6807839B2 (ja) * 2014-12-02 2021-01-06 カルティエ インターナショナル アーゲー 宝石、特にはファセットダイヤモンド、およびそれを台に取り付ける方法
US9398791B1 (en) * 2015-01-26 2016-07-26 Ecna, Llc Diamond cuts providing increased light amplification
USD883849S1 (en) * 2018-10-26 2020-05-12 Tokyo Pearl Co., Ltd Gemstone

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5657646A (en) * 1994-10-04 1997-08-19 Rosenberg; Steven F. Jewel having multiple culets
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
US20040055333A1 (en) * 2002-09-23 2004-03-25 Smith Allen L. Faceted circular cut diamond
US20060026991A1 (en) * 2004-07-20 2006-02-09 Naotake Shuto Method for cutting diamond and diamond proportion
CN102144832A (zh) * 2010-06-18 2011-08-10 林惠锋 钻石组合

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3643541B2 (ja) * 2000-08-25 2005-04-27 株式会社ほほえみブレインズ 装飾用ダイヤモンドのカットデザイン
US6305193B1 (en) * 2000-10-17 2001-10-23 Continental Jewelry (Usa) Inc. Gemstone
US6604382B2 (en) * 2000-11-07 2003-08-12 Naotake Shuto New-cut diamond shape
US6698239B2 (en) * 2001-02-23 2004-03-02 Samuel Aaron, Inc. Brilliant cut diamond
JP4482713B2 (ja) * 2002-02-19 2010-06-16 株式会社ほほえみブレインズ 装飾用ダイヤモンド
US20040050097A1 (en) * 2002-09-12 2004-03-18 Baruch Eisenberg Enhanced diamond and method for making same
US20060032271A1 (en) * 2004-08-13 2006-02-16 Arun Thapar Dancing stone for suspending from an article of jewelry
US20060086143A1 (en) * 2004-10-27 2006-04-27 Eugene Biro Round cut gemstone
USD595180S1 (en) * 2008-09-25 2009-06-30 M.S.B.H. Alliance Diamond

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5657646A (en) * 1994-10-04 1997-08-19 Rosenberg; Steven F. Jewel having multiple culets
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
US20040055333A1 (en) * 2002-09-23 2004-03-25 Smith Allen L. Faceted circular cut diamond
US20060026991A1 (en) * 2004-07-20 2006-02-09 Naotake Shuto Method for cutting diamond and diamond proportion
CN102144832A (zh) * 2010-06-18 2011-08-10 林惠锋 钻石组合

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
GEMS & GEMOLOGY, 2004, pages 202 - 228

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014056008A1 (fr) 2012-10-12 2014-04-17 D. Swarovski Kg Taille pour pierre fine
US10085530B2 (en) 2012-10-12 2018-10-02 D. Swarovski Kg Chaton cut for a gemstone made of topaz
WO2019072857A1 (fr) 2017-10-09 2019-04-18 D. Swarovski Kg Découpe de pierre précieuse

Also Published As

Publication number Publication date
US20120079853A1 (en) 2012-04-05
JP2012075900A (ja) 2012-04-19

Similar Documents

Publication Publication Date Title
EP2436281A1 (fr) Pierre décorative dotée d'une taille brillante
EP2505096B1 (fr) Pierre décorative d'un pendentif
DE69900431T2 (de) Gemischt geschliffener Edelstein mit Quadrat-Eckenschliff
EP0562141A1 (fr) Sertissage de pierres précieuses
US9943144B2 (en) Step-cut gemstone
EP2906073B1 (fr) Taille pour pierre fine
EP3537919A1 (fr) Gemme
EP3796804A1 (fr) Ensemble de pierres précieuses et procédé de fabrication d'un ensemble de pierres précieuses
DE3878384T2 (de) Fassungstraeger fuer schmucksteine, insbesondere fuer diamanten, fassung fuer einen derartigen schmuckstein und fassungsstraeger, verfahren und werkzeug zur formung eines derartigen fassungstraegers.
EP1517160A2 (fr) Disque de diffusion
AU2008346039B2 (en) Ornamental diamond having two-stage pavilion
EP2245951A1 (fr) Diamant ornemental présentant une culasse divisée en deux
AT515136B1 (de) Schmuckstein mit sternförmigem Erscheinungsbild
AT518325B1 (de) Facettiertes transparentes Objekt
AT11232U1 (de) Schmuckstein mit verspiegelter vorderseite
DE102015204622A1 (de) Uhrglas mit mindestens einem Schmuckstein
EP3090644B1 (fr) Élément de joaillerie
EP3552061A1 (fr) Verre de montre avec élément luminescent
AT393597B (de) Zur herstellung von kesselketten geeigneter schmuckstein
EP3418068A1 (fr) Bijou et outil ainsi que procédé de fabrication de bijou
AT316906B (de) Facetten aufweisender Schmuckstein
DE9404602U1 (de) Lichtdurchlässiger Schmuckstein
DE4409291A1 (de) Lichtdurchlässiger Schmuckstein
DE202009003629U1 (de) Facettiert geschliffener Edelstein, insbesondere Diamant
AT7967U1 (de) Schmuckstein

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20121005