EP0084804A1 - Cut gem, especially a diamond - Google Patents

Cut gem, especially a diamond Download PDF

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Publication number
EP0084804A1
EP0084804A1 EP83100204A EP83100204A EP0084804A1 EP 0084804 A1 EP0084804 A1 EP 0084804A1 EP 83100204 A EP83100204 A EP 83100204A EP 83100204 A EP83100204 A EP 83100204A EP 0084804 A1 EP0084804 A1 EP 0084804A1
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EP
European Patent Office
Prior art keywords
facets
cut
stone
ground
diamond
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
EP83100204A
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German (de)
French (fr)
Other versions
EP0084804B1 (en
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
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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.)
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Publication date
Application filed by Atelier-Juwel Georg Bunz filed Critical Atelier-Juwel Georg Bunz
Priority to AT83100204T priority Critical patent/ATE19586T1/en
Publication of EP0084804A1 publication Critical patent/EP0084804A1/en
Application granted granted Critical
Publication of EP0084804B1 publication Critical patent/EP0084804B1/en
Expired legal-status Critical Current

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    • 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 cut gem, 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 side 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 is again used as a smaller gemstone, one of which is more or less octahedral basic crystal form.
  • the cut gemstone in particular diamond, which is ground in the upper and lower part above and below the Rondist level, each has four or more side facets which end in a stone tip in the lower part, with outer facets being ground on the periphery in the Rondist level, is characterized according to the invention now in that the side facets also run into a stone tip on the upper part, that the outer facets are rhombic in shape and meet in a wreath-shaped arrangement at their corners and that the setting is made from the stone tips.
  • 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 diamond 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 into a ring of outer facets 5 on the circumference of the girdle plane E, which (5) each abut one another 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 of the new cut shape also have four corner points.

Abstract

1. A gem having face-ground facets, particularly a diamond, which in each of its crown and base portions respectively disposed over and under the girdle plane is provided with four or more ground side facets, which in the base and crown portions terminate in a point, which diamond is provided at its periphery in the girdle plane with external facets and is adapted to be set from sides of the point of the gem, the surfaces of the external facets extending parallel to the longitudinal axis of the gem, characterized in that the external facets (1, 5) have a rhombic configuration and constitute an annular series in which they adjoin at their corners, and in addition to the external facets (5) all side facets (1, 2, 6) have also four corner points.

Description

Die Erfindung bezieht sich auf einen geschliffenen Edelstein, insbes. Diamant.The invention relates to a cut gem, in particular diamond.

Die Brillanz eines geschliffenen Edelstein beruht auf der Wahl der angeschliffenen Facetten über und unter der Rondistenebene und der Winkelbildung zueinander, wobei die Rondistenebene Ober- und Unterteil des Edelsteins voneinander trennt. Bei den bekannten Steinschliffen bildet die Rondistenebene zwischen den oberen und unteren Seitenfacetten eine umlaufende Trennkante, wobei die Steinfassung üblicher Weise an einem Konusteil des Edelsteins vorgesehen ist, während der andere Konusteil abgeschnitten wird und der Rest wiederum als kleinerer Edelstein Verwendung findet, wobei von einer mehr oder weniger octaedrischen Edelsteinkristall-Grundform auszugehen ist.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. In the known stone cuts, the Rondist plane between the upper and lower side 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 is again used as a smaller gemstone, one of which is more or less octahedral basic crystal form.

Es ist bekannt Edelsteinen, insbes. Diamanten im Ober- und Unterteil über und unter der Rondistenebene eine Vielzahl von Seitenfacetten anzuschleifen, wobei die obere Spitze, wie vorgeschildert, zur Seite des Beschauers bei gefaßtem Stein abgeflacht ist. Einen so geschliffenen Diamanten zeigt beispielsweise das DE-GM 70 19 610 und das US-PS 23 40 659. Hierbei ist die Steinkante in der Rondistenebene zur Kantensicherung und als Verzierung abgeschliffen, vorallem um hier beim Fassen des Steins durch Umlegen der Fassungskrampen ein Ausbrechen zu vermeiden. Dieser Kantenbruch hat kaum Einfluß auf die Brillanz des Diamanten.It is known to grind precious stones, in particular diamonds in the upper and lower part above and below the Rondist plane, a large number of side facets, the upper tip being flattened to the observer's side when the stone is set. A diamond cut in this way is shown, for example, in DE-GM 70 19 610 and US Pat. No. 2,340,659. Here, the stone edge in the Rondist plane is ground to secure the edges and as an ornament, especially in order to break out when the stone is gripped by flipping the mounting cramps avoid. This edge break has little influence on the brilliance of the diamond.

Es ist nun Aufgabe der Erfindung eine neue Brillanzwirkung und Fassungsform durch ein neues Schliffbild verbunden mit einer oft besseren Ausnutzung der Edelsteinkristall-Grundform zu erreichen.It is an object of the invention to achieve a new brilliance and frame shape by means of a new micrograph combined with an often better utilization of the basic crystal form.

Der geschliffene Edelstein, insbes. Diamant, welchem im Ober- und Unterteil über und unter der Rondistenebene je vier oder mehr Seitenfacetten angeschliffen sind, die im Unterteil in eine Steinspitze auslaufen, wobei in der Rondistenebene am Umfang Außenfacetten angeschliffen sind, kennzeichnet sich gemäß der Erfindung nun dadurch, daß die Seitenfacetten auch am Oberteil in eine Steinspitze auslaufen, daß die Außenfacetten Rhombenform besitzen und sich dieselben bei kranzförmiger Anordnung an ihren Ecken stoßen und daß die Fassung von Seiten der Steinspitzen aus erfolgt. Hierdurch wird vielfach eine bessere Ausnutzung der Grundform der Edelsteinkristalle als Octaeder bei neuartiger Brillanz erreicht, vorallem bei geschliffenen Edelsteinen, welche bei freiliegendem Kranz von Außenfacetten in Rondistenebene von beiden Steinspitzen her in liegender oder stehender Anordnung am Schmuckkörper, insbes. Fingerring gefaßt sind.The cut gemstone, in particular diamond, which is ground in the upper and lower part above and below the Rondist level, each has four or more side facets which end in a stone tip in the lower part, with outer facets being ground on the periphery in the Rondist level, is characterized according to the invention now in that the side facets also run into a stone tip on the upper part, that the outer facets are rhombic in shape and meet in a wreath-shaped arrangement at their corners and that the setting is made from the stone tips. In this way, a better utilization of the basic shape of the gemstone crystals than octahedra is achieved with a new kind of brilliance, especially in the case of cut gemstones which, when the wreath is exposed from outside facets in the Rondist level, are set from both stone tips in a lying or standing arrangement on the jewelry body, especially a finger ring.

Weitere Einzelheiten des erfindungsgemäß geschliffenen Edelsteins ergeben sich aus der folgenden Beschreibung an Hand von zwei bevorzugten Ausführungsbeispielen und zwar zeigen:

  • Figur 1 und 2 die Seitenansicht und Draufsicht einer ersten Ausführungsform eines erfindungsgemäß geschliffenen Edelsteins und
  • Figur 3 und 4 die Seitenansicht und Draufsicht einer zweiten Ausführungsform eines erfindungsgemäß geschliffenen Edelsteins.
Further details of the gemstone cut according to the invention can be found in the following description based on two preferred exemplary embodiments, namely:
  • 1 and 2 show the side view and top view of a first embodiment of a gemstone ground according to the invention and
  • Figures 3 and 4, the side view and top view of a second embodiment of a gemstone cut according to the invention.

Wie-aus der Zeichnung beim ersten Ausführungsbeispiel nach Figur 1 und 2 ersichtlich wird, besitzt der geschliffene Edelstein über und unter der Rondistenebene E jeweils acht Seitenfacetten 1 bzw. 2, welche im Konusteil mit Steinspitzen3 und 4 auslaufen. Am Umfang der Rondistenebene E sind Außenfacetten 5 angeschliffen, welche sich über die theoretischen Schnittpunkte der Kanten der Seitenfacetten 1,2 mit der Rondistenebene E erstrecken und Rhombenform besitzen, sowie bei kranzförmiger Anordnung sich an ihren Ecken stoßen und welche parallel zur Stein-Längsache A zwischen den Steinspitzen 3 und 4 verlaufen.As can be seen from the drawing in the first exemplary embodiment according to FIGS. 1 and 2, 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. On the circumference of the girdle plane E, 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 diamond 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.

Die Seitenfacetten 1 bzw. 2 laufen somit am Umfang der Rondistenebene E in einen Kranz von Außenfacetten 5 ein, welche (5) sich jeweils über Eck stoßen und im Aufriß jeweils rechtwinklig zu den Kanten der oberen und unteren Seitenfacetten 1,2 liegen, welche ihrerseits in gegenüberliegenden Ecken der Außenfacetten 5 enden. Schließlich weist der umlaufende Kranz von Außenfacetten 5 die Form von Rhomben auf und besitzen hier eine Anzahl von Acht.The side facets 1 and 2 thus run into a ring of outer facets 5 on the circumference of the girdle plane E, which (5) each abut one another 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. Finally, the circumferential ring of outer facets 5 has the shape of rhombuses and has a number of eight here.

Für die oberen bzw. unteren Seitenfacetten sind beim Edelstein-, insbes. Diamantschliff durch vier teilbare Anzahlen, d.h. vier, acht und zwölf üblich.For the upper and lower side facets of gemstones, especially diamond cut, there are four divisible numbers, i.e. four, eight and twelve common.

Beim zweiten Ausführungsbeispiel nach Fig. 3 und 4 sind zusätzlich zu den oberen und unteren Seitenfacetten 1 bzw. 2 im Aufriß eine Sternform ergebende Facetten 6 bzw. 7 angeschliffen, welche in der Rondistenebene E sodann an die oberen bzw. unteren Ecken der Außenfacetten 5 stoßen. Schließlich weisen bei der neuen Schlifform neben den Außenfacetten auch alle Seitenfacetten vier Eckpunkte auf.In the second embodiment according to FIGS. 3 and 4, in addition to the upper and lower side facets 1 and 2, 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. . Finally, in addition to the outer facets, all side facets of the new cut shape also have four corner points.

Claims (5)

1. Geschliffener Edelstein, insbes. Diamant, welchem im Ober- und Unterteil über und unter der Rondistenebene je vier oder mehr Seitenfacetten angeschliffen sind, die im Unterteil in eine Steinspitze auslaufen, wobei in der Rondistenebene am Umfang Außenfacetten angeschliffen sind, d a - durch gekennzeichnet , daß die Seitenfacetten (1) auch am Oberteil in eine Steinspitze (3) auslaufen, daß die Außenfacetten (5) Rhombenform besitzen und sich dieselben (5) bei kranzförmiger Anordnung an ihren Ecken stoßen und daß die Fassung von Seiten der Steinspitzen (3,4) aus erfolgt.1.Ground gemstone, in particular diamond, which has four or more side facets cut in the upper and lower part above and below the Rondist level, which end in a stone tip in the lower part, whereby in the Rondist level outer facets are ground on the circumference, as a result that the side facets (1) also run into a stone tip (3) on the upper part, that the outer facets (5) have a rhomboid shape and that they (5) abut at their corners in a wreath-shaped arrangement, and that the setting from the side of the stone tips (3, 4) off. 2. Geschliffener Edelstein nach Anspruch 1, da d u r e h gekennzeichnet, daß der in der Rondistenebene umlaufende Kranz von rhombischen Außenfacetten (5) im Aufriß jeweils rechtwinklig zu den Kanten der oberen und unteren Seitenfacetten (1,2) liegt, welche in gegenüberliegenden Ecken der Außenfacetten enden.2. Polished gemstone according to claim 1, since dureh characterized in that the circumferential ring in the Rondistenebene of rhombic outer facets (5) in elevation is at right angles to the edges of the upper and lower side facets (1,2), which in opposite corners of the outer facets end up. 3. Geschliffener Edelstein nach Anspruch 1 oder 2, dadurch gekennzeichnet , daß zusätzlich zu den oberen und unteren Seitenfacetten im Aufriß eine Sternform ergebende Facetten (6) angeschliffen sind.3. Cut gemstone according to claim 1 or 2, characterized in that in addition to the upper and lower side facets in the elevation a star-shaped facets (6) are ground. 4. Geschliffener Edelstein nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet , daß neben den Außenfacetten (5) auch alle Seitenfacetten (1,2,6) vier Eckpunkte haben.4. Cut gemstone according to one of claims 1 to 3, characterized in that in addition to the outer facets (5) and all side facets (1,2,6) have four corner points. 5. Geschliffener Edelstein nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet , daß die Flächen der Außenfacetten (5) parallel zur Steinlängsachse (A-A) verlaufen.5. Cut gemstone according to one of the preceding claims, characterized in that the surfaces of the outer facets (5) run parallel to the longitudinal axis of the stone (A-A).
EP83100204A 1982-01-26 1983-01-12 Cut gem, especially a diamond Expired EP0084804B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83100204T ATE19586T1 (en) 1982-01-26 1983-01-12 CUT GEMSTONE, ESPECIALLY. DIAMOND.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3202302A DE3202302C2 (en) 1982-01-26 1982-01-26 Cut gemstone, especially diamond
DE3202302 1982-01-26

Publications (2)

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

Family

ID=6153873

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83100204A Expired EP0084804B1 (en) 1982-01-26 1983-01-12 Cut gem, especially a diamond

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EP (1) EP0084804B1 (en)
JP (1) JPS58212402A (en)
AT (1) ATE19586T1 (en)
DE (1) DE3202302C2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993019635A1 (en) * 1992-04-02 1993-10-14 Ulrich Freiesleben Cut diamond
USD885490S1 (en) * 2018-08-24 2020-05-26 Epoch Company Ltd Toy bead

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19605876C1 (en) * 1996-02-19 1997-05-28 Atelier Bunz Gmbh Jewel, e.g. diamond

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR323618A (en) * 1902-08-09 1903-03-10 A M I Tolkowsky New diamond shape, called "diamond star"
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
FR973748A (en) * 1948-10-16 1951-02-14 New jewelry products
GB854197A (en) * 1958-07-24 1960-11-16 Baruch Berkovitch Improvements in and relating to jewellery
DE2051965A1 (en) * 1970-10-22 1972-04-27 Alfred Tomesch oHG, 8950 Kaufbeuren Coloured moulded thermoplastics ornament - with differently coloured facets
DE2063970A1 (en) * 1970-12-28 1972-07-13 Unidor Gmbh, 7530 Pforzheim Procedure for setting gemstones

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH26833A (en) * 1902-08-19 1903-10-31 Cooper Townsend David Novel faceted gemstone
US2340659A (en) * 1943-05-05 1944-02-01 Goldstein Edward Precious stone
AT242416B (en) * 1964-01-16 1965-09-10 Swarovski & Co Gemstone with flower shape
US3585764A (en) * 1969-06-10 1971-06-22 James Huisman Diamond cutting method
JPS49115289U (en) * 1973-01-29 1974-10-02
JPS54167089U (en) * 1978-05-13 1979-11-24

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR323618A (en) * 1902-08-09 1903-03-10 A M I Tolkowsky New diamond shape, called "diamond star"
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
FR973748A (en) * 1948-10-16 1951-02-14 New jewelry products
GB854197A (en) * 1958-07-24 1960-11-16 Baruch Berkovitch Improvements in and relating to jewellery
DE2051965A1 (en) * 1970-10-22 1972-04-27 Alfred Tomesch oHG, 8950 Kaufbeuren Coloured moulded thermoplastics ornament - with differently coloured facets
DE2063970A1 (en) * 1970-12-28 1972-07-13 Unidor Gmbh, 7530 Pforzheim Procedure for setting gemstones

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993019635A1 (en) * 1992-04-02 1993-10-14 Ulrich Freiesleben Cut diamond
US5454235A (en) * 1992-04-02 1995-10-03 Freiesleben; Ulrich Cut diamond
US5657647A (en) * 1992-04-02 1997-08-19 Freiesleben; Ulrich Cut diamond
USD885490S1 (en) * 2018-08-24 2020-05-26 Epoch Company Ltd Toy bead

Also Published As

Publication number Publication date
EP0084804B1 (en) 1986-05-07
JPS58212402A (en) 1983-12-10
JPH0375164B2 (en) 1991-11-29
DE3202302C2 (en) 1984-01-26
DE3202302A1 (en) 1983-08-04
ATE19586T1 (en) 1986-05-15

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