EP0084804B1 - Geschliffener Edelstein, insbes. Diamant - Google Patents

Geschliffener Edelstein, insbes. Diamant Download PDF

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Publication number
EP0084804B1
EP0084804B1 EP83100204A EP83100204A EP0084804B1 EP 0084804 B1 EP0084804 B1 EP 0084804B1 EP 83100204 A EP83100204 A EP 83100204A EP 83100204 A EP83100204 A EP 83100204A EP 0084804 B1 EP0084804 B1 EP 0084804B1
Authority
EP
European Patent Office
Prior art keywords
facets
gem
external
diamond
ground
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
Application number
EP83100204A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0084804A1 (de
Inventor
George Bunz
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.)
Atelier-Juwel Georg Bunz
Original Assignee
Atelier-Juwel Georg Bunz
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 Atelier-Juwel Georg Bunz filed Critical Atelier-Juwel Georg Bunz
Priority to AT83100204T priority Critical patent/ATE19586T1/de
Publication of EP0084804A1 publication Critical patent/EP0084804A1/de
Application granted granted Critical
Publication of EP0084804B1 publication Critical patent/EP0084804B1/de
Expired 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 invention relates to a gemstone with facets, in particular diamond.
  • the brilliance of a cut gemstone is based on the choice of the cut facets above and below the Rondist plane and the angle formation with each other, the Rondist plane separating the upper and lower part of the gemstone from each other.
  • the Rondist plane between the upper and lower stone facets forms a circumferential separating edge, the stone setting being usually provided on one cone part of the gemstone, while the other cone part is cut off and the rest in turn is used as a smaller gemstone, one of which is more or less octahedral basic crystal form.
  • FR-A-79 05 945 it is known to hold a gemstone for jewelry purposes on both stone tips by intermediate clamping. In this version, no particular value was placed on the brilliance, which is particularly important with diamonds.
  • FR-A-323618 it is known to cut external facets in a diamond shape in the case of a conventional stone with a tip and plateau and to grind a large number of side facets on both sides in a triangular shape in order to achieve high brilliance in this conventional frame shape.
  • the object of the invention is now, starting from a stone setting on the part of the stone tips, to achieve a particular brilliance effect with a simple grinding pattern combined with a good utilization of the basic crystal crystal shape. This is intended to achieve a high level of brilliance with a high level of break resistance and less complex grinding work.
  • the cut gemstone has eight side facets 1 and 2 above and below the Rondist plane E, which end in the cone part with stone tips 3 and 4.
  • outer facets 5 are ground, which extend over the theoretical intersection of the edges of the side facets 1, 2 with the girdle plane E and have a rhombic shape, and in the case of a wreath-shaped arrangement meet at their corners and which run parallel to the longitudinal stone axis A between the stone tips 3 and 4 run.
  • the side facets 1 and 2 thus run on the circumference of the girdle plane E into a ring of outer facets 5, which (5) meet each other in a corner and are each at right angles to the edges of the upper and lower side facets 1, 2, which in turn end in opposite corners of the outer facets 5.
  • the circumferential ring of outer facets 5 has the shape of rhombuses and has a number of eight here.
  • a star-shaped facets 6 and 7 are ground in elevation, which then abut the upper and lower corners of the outer facets 5 in the Rondist plane E. .
  • all side facets also have four corner points in the new cut shape for gripping the stone from the stone tip.

Landscapes

  • Adornments (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
EP83100204A 1982-01-26 1983-01-12 Geschliffener Edelstein, insbes. Diamant Expired EP0084804B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83100204T ATE19586T1 (de) 1982-01-26 1983-01-12 Geschliffener edelstein, insbes. diamant.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3202302A DE3202302C2 (de) 1982-01-26 1982-01-26 Geschliffener Edelstein, insbesondere Diamant
DE3202302 1982-01-26

Publications (2)

Publication Number Publication Date
EP0084804A1 EP0084804A1 (de) 1983-08-03
EP0084804B1 true EP0084804B1 (de) 1986-05-07

Family

ID=6153873

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83100204A Expired EP0084804B1 (de) 1982-01-26 1983-01-12 Geschliffener Edelstein, insbes. Diamant

Country Status (4)

Country Link
EP (1) EP0084804B1 (enrdf_load_stackoverflow)
JP (1) JPS58212402A (enrdf_load_stackoverflow)
AT (1) ATE19586T1 (enrdf_load_stackoverflow)
DE (1) DE3202302C2 (enrdf_load_stackoverflow)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4210995C2 (de) * 1992-04-02 1997-04-03 Ulrich Dr Freiesleben Geschliffener Edelstein, insbesondere Diamant
DE19605876C1 (de) * 1996-02-19 1997-05-28 Atelier Bunz Gmbh Geschliffener Edelstein
JP1624158S (enrdf_load_stackoverflow) * 2018-08-24 2019-08-05

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR323618A (fr) * 1902-08-09 1903-03-10 A M I Tolkowsky Nouvelle forme de diamant, dite "diamond star"
CH26833A (de) * 1902-08-19 1903-10-31 Cooper Townsend David Neuartig facettierter Edelstein
US1904259A (en) * 1931-03-19 1933-04-18 Lucian M Zell Jewel and setting therefor
US2239456A (en) * 1938-08-29 1941-04-22 Graeve Theodore De Process of cutting contact points
US2340659A (en) * 1943-05-05 1944-02-01 Goldstein Edward Precious stone
FR973748A (fr) * 1948-10-16 1951-02-14 Produits nouveaux de joaillerie
GB854197A (en) * 1958-07-24 1960-11-16 Baruch Berkovitch Improvements in and relating to jewellery
AT242416B (de) * 1964-01-16 1965-09-10 Swarovski & Co Schmuckstein mit Blütenform
US3585764A (en) * 1969-06-10 1971-06-22 James Huisman Diamond cutting method
DE2051965A1 (en) * 1970-10-22 1972-04-27 Alfred Tomesch oHG, 8950 Kaufbeuren Coloured moulded thermoplastics ornament - with differently coloured facets
DE2063970A1 (de) * 1970-12-28 1972-07-13 Unidor Gmbh, 7530 Pforzheim Verfahren zur Fassung von Schmucksteinen
JPS49115289U (enrdf_load_stackoverflow) * 1973-01-29 1974-10-02
JPS54167089U (enrdf_load_stackoverflow) * 1978-05-13 1979-11-24

Also Published As

Publication number Publication date
DE3202302A1 (de) 1983-08-04
JPS58212402A (ja) 1983-12-10
EP0084804A1 (de) 1983-08-03
ATE19586T1 (de) 1986-05-15
DE3202302C2 (de) 1984-01-26
JPH0375164B2 (enrdf_load_stackoverflow) 1991-11-29

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