EP0883356B1 - Polished gemstone - Google Patents

Polished gemstone Download PDF

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Publication number
EP0883356B1
EP0883356B1 EP97914110A EP97914110A EP0883356B1 EP 0883356 B1 EP0883356 B1 EP 0883356B1 EP 97914110 A EP97914110 A EP 97914110A EP 97914110 A EP97914110 A EP 97914110A EP 0883356 B1 EP0883356 B1 EP 0883356B1
Authority
EP
European Patent Office
Prior art keywords
facets
additional
girdle plane
angle
gemstone
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
EP97914110A
Other languages
German (de)
French (fr)
Other versions
EP0883356A1 (en
Inventor
Georg 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 Bunz GmbH
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Atelier Bunz GmbH
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 Bunz GmbH filed Critical Atelier Bunz GmbH
Publication of EP0883356A1 publication Critical patent/EP0883356A1/en
Application granted granted Critical
Publication of EP0883356B1 publication Critical patent/EP0883356B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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 gemstone with the features according to the Preamble of claim 1.
  • Such a gem cut is for example from DE-PS 15 57 625 known where an equal number of shell facets and Bottom facets the appearance and its optical properties establish.
  • DE 27 20 267 C2 shows a diamond that is very has complex structure of ground surfaces, including narrow, triangular facets, grouped together from the area near the tip of the diamond to widen the circumferential side facets.
  • the interplay of the multitude different facets leads in its optical effect also to a complex, rather confusing appearance.
  • the object of the invention is to maintain the original shape of the diamond crystal apply a cut that is brilliant and brightness effect offers a new appearance.
  • this object is according to the characterizing part of claim 1 solved.
  • the fan-like group of additional facets on the lower part leads when viewing the gemstone from the top for the viewer to a reflection such that at the four pyramid-shaped Upper part facets one faceted surface for each facet surface
  • the lighting effect is created in contrast to the previously known rather flat lighting effects in the aforementioned known types of cuts.
  • the fourfold beam of light leads to reflection phenomena, which penetrates the entire surface of the diamond several times becomes.
  • the top facet forms an isosceles triangle.
  • the lower part of the diamond contains four lower part facets 10 ... 13, which also form an isosceles triangle.
  • top facets and bottom facets are by a circumferential facet band 30 perpendicular to the Rondist plane educated.
  • the central additional facet is also an exemplary embodiment formed as a narrow triangle, but it is also possible (not shown), the central additional facet with parallel side edges to be provided, so that their effect is roughly the circumferential Faceted band 30 corresponds.
  • the levels of neighboring additional facets are inclined towards each other at a very acute angle, so that in the illustrated embodiment, the 36 additional facets Gemstone between the lower part facets 10 ... 13 dome-shaped complete below.
  • the angle ⁇ between the upper part facets 20 ... 23 depends on Gemstone between 23 ° and 30 °, the angle ⁇ between the lower part facets 10 ... 13 and the Rondist level is between 34 ° and 43 °.

Landscapes

  • Adornments (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Saccharide Compounds (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)

Abstract

PCT No. PCT/DE97/00196 Sec. 371 Date Aug. 13, 1998 Sec. 102(e) Date Aug. 13, 1998 PCT Filed Jan. 30, 1997 PCT Pub. No. WO97/29661 PCT Pub. Date Aug. 21, 1997A gemstone, on which respectively at least four facets of equal size have been cut in the upper part and the lower part above and below the girdle plane, which have a parallel base edge, wherein the angle ( alpha ) between an upper part facet (20 . . . 23) and the girdle plane is less than the angle ( beta ) between a lower part facet (10 . . . 13) and the girdle plane. Between the lateral edges of the lower part facets (10, 11, 12, 13) one group (40 . . . 43) of narrow, triangular additional facets, which extend fan-like from a girdle plane, is provided. The narrow sides of the one group of additional facets meet in the connecting lines between the tips of the lower part facets (10, 11, 12, 13) and the narrow sides of the additional facets of a respectively neighboring group.

Description

Technisches GebietTechnical field

Die Erfindung betrifft einen Edelstein mit den Merkmalen gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a gemstone with the features according to the Preamble of claim 1.

Stand der TechnikState of the art

Ein derartiger Edelsteinschliff ist beispielsweise aus der DE-PS 15 57 625 bekannt, wo eine gleiche Anzahl von Oberteil-Facetten und Unterteil-Facetten das Erscheinungsbild und dessen optische Eigenschaften festlegen.Such a gem cut is for example from DE-PS 15 57 625 known where an equal number of shell facets and Bottom facets the appearance and its optical properties establish.

Ein vergleichbarer Schliff ist aus der DE 42 10 995 A1 bekannt, wo spezielle Winkel zwischen den Oberteil-Facetten und den Unterteil-Facetten zu einem besonders auffallenden Erscheinungsbild des geschliffenen Edelsteins führen sollen, im wesentlichen durch flächige Wirkungen, die sich in ihrer Helligkeit unterscheiden.A comparable cut is known from DE 42 10 995 A1, where special angles between the upper part facets and the lower part facets to a particularly striking appearance of the polished Gemstones are supposed to lead, essentially through flat Effects that differ in their brightness.

Eine Weiterbildung dieser Schliffarten zeigt die DE 32 02 302 A1, wo Außenfacetten die Rondistenebene umfassen.DE 32 02 302 A1 shows where these types of cuts are developed External facets encompass the Rondist level.

Schließlich zeigt DE 27 20 267 C2 einen Brillanten, der eine sehr komplexe Struktur von geschliffenen Flächen aufweist, darunter auch schmale, dreieckige Facetten, die in Gruppen zusammengefaßt, sich vom Bereich nahe der Spitze des Brillanten fächerartig bis zu umlaufenden Seitenfacetten aufweiten. Das Zusammenspiel der Vielzahl unterschiedlicher Facetten führt in seiner optischen Wirkung ebenfalls zu einem komplexen, eher verwirrenden Erscheinungsbild. Finally, DE 27 20 267 C2 shows a diamond that is very has complex structure of ground surfaces, including narrow, triangular facets, grouped together from the area near the tip of the diamond to widen the circumferential side facets. The interplay of the multitude different facets leads in its optical effect also to a complex, rather confusing appearance.

Darstellung der ErfindungPresentation of the invention

Aufgabe der Erfindung ist es, unter Beibehaltung der Urform des Diamantkristalls einen Schliff anzubringen, der hinsichtlich Brillanz und Helligkeitswirkung ein neues Erscheinungsbild bietet.The object of the invention is to maintain the original shape of the diamond crystal apply a cut that is brilliant and brightness effect offers a new appearance.

Erfindungsgemäß wird diese Aufgabe gemäß dem kennzeichnenden Teil des Patentanspruchs 1 gelöst.According to the invention, this object is according to the characterizing part of claim 1 solved.

Die fächerartig ausgehende Gruppe der Zusatzfacetten am Unterteil führt bei Betrachtung des Edelsteins vom Oberteil her für den Betrachter zu einer Reflexion derart, daß an den vier pyramidenförmigen Oberteilfacetten je Facettenfläche eine strahlen- oder sternförmige Lichtwirkung entsteht, die im Gegensatz zu den bisher bekannten eher flächigen Lichtwirkungen bei den eingangs erwähnten bekannten Schliffarten steht.The fan-like group of additional facets on the lower part leads when viewing the gemstone from the top for the viewer to a reflection such that at the four pyramid-shaped Upper part facets one faceted surface for each facet surface The lighting effect is created in contrast to the previously known rather flat lighting effects in the aforementioned known types of cuts.

Die vierfache Lichtbündelung führt dabei zu Reflexionserscheinungen, von der die Gesamtoberfläche des Diamanten mehrfach durchdrungen wird.The fourfold beam of light leads to reflection phenomena, which penetrates the entire surface of the diamond several times becomes.

Vorteilhafte Ausgestaltungen der erfindungsgemäßen Lösung sind den Unteransprüchen entnehmbar.Advantageous embodiments of the solution according to the invention are the Removable subclaims.

Kurze Beschreibung der ZeichnungenBrief description of the drawings

Ein bevorzugtes Ausführungsbeispiel wird anhand der Zeichnungen noch näher erläutert. Es zeigen:

Fig. 1
eine perspektivische Ansicht des geschliffenen Edelsteins, schräg von unten her,
Fig. 2
eine Aufsicht auf den Edelstein in Richtung des Pfeils A der Fig. 3,
Fig. 3
eine Seitenansicht des Edelsteins in Richtung des Pfeils C der Fig. 4 und
Fig. 4
eine Unteransicht des Edelsteins in Richtung des Pfeils B der Fig. 3.
A preferred embodiment is explained in more detail with reference to the drawings. Show it:
Fig. 1
a perspective view of the cut gem, obliquely from below,
Fig. 2
3 shows a top view of the gem in the direction of arrow A in FIG. 3,
Fig. 3
a side view of the gem in the direction of arrow C of FIGS. 4 and
Fig. 4
a bottom view of the gem in the direction of arrow B of FIG. 3rd

Beschreibung des AusführungsbeispielsDescription of the embodiment

Über der quadratischen Rondistenebene erhebt sich das Oberteil des Edelsteins, das aus vier gleich großen, zu einer oberen Kalette zulaufenden, Oberteil-Facetten 20...23 besteht. Die Oberteil-Facette bildet hierbei ein gleichschenkliges Dreieck.The upper part of the rises above the square Rondist level Gemstone, which consists of four equal, tapering to an upper Upper part facets 20 ... 23 exist. The top facet forms an isosceles triangle.

Das Unterteil des Diamanten beinhaltet vier Unterteil-Facetten 10... 13, die ebenfalls ein gleichschenkliges Dreieck bilden.The lower part of the diamond contains four lower part facets 10 ... 13, which also form an isosceles triangle.

Die gemeinsame Basisseite von Oberteil-Facetten und Unterteil-Facetten wird von einem umlaufenden Facettenband 30 senkrecht zur Rondistenebene gebildet.The common base side of top facets and bottom facets is by a circumferential facet band 30 perpendicular to the Rondist plane educated.

Von den vier Ecken der Rondistenebene erstrecken sich vier Gruppen 40...43 von schmalen, im wesentlichen dreieckigen, Zusatzfacetten zwischen den Seitenkanten der Unterteil-Facetten 10..13 derart, daß ihre Schmalseiten in den Verbindungslinien zwischen den Spitzen der Unterteil-Facetten 10..13 mit den Schmalseiten der Zusatz-Facetten der jeweils benachbarten Gruppe aneinanderstoßen. Dabei besteht jede Gruppe aus einer zentralen Zusatzfacette, deren dachähnliche Schmalseiten eine pyramidenförmige Kalette K des Unterteils bilden und an die sich beidseitig beim dargestellten Ausführungsbeispiel jeweils vier schmale, dreieckige Zusatzfacetten anschließen. Beim dargestellten Ausführungsbeispiel ist die zentrale Zusatzfacette ebenfalls als schmales Dreieck ausgebildet, es ist jedoch auch möglich (nicht dargestellt), die zentrale Zusatzfacette mit parallelen Seitenkanten zu versehen, so daß sie in ihrer Wirkung etwa dem umlaufenden Facettenband 30 entspricht. Die Ebenen benachbarter Zusatzfacetten sind um einen sehr spitzen Winkel gegeneinander geneigt, so daß beim dargestellten Ausführungsbeispiel die 36 Zusatzfacetten den Edelstein zwischen den Unterteil-Facetten 10...13 kuppelförmig nach unten abschließen. Four groups extend from the four corners of the Rondist level 40 ... 43 of narrow, essentially triangular, additional facets between the side edges of the lower part facets 10..13 such that their narrow sides in the connecting lines between the tips of the Lower part facets 10..13 with the narrow sides of the additional facets of the neighboring group. Each exists Group from a central additional facet, the roof-like narrow sides form and form a pyramid-shaped pallet K of the lower part which are on both sides of the illustrated embodiment Connect four narrow, triangular additional facets. In the illustrated The central additional facet is also an exemplary embodiment formed as a narrow triangle, but it is also possible (not shown), the central additional facet with parallel side edges to be provided, so that their effect is roughly the circumferential Faceted band 30 corresponds. The levels of neighboring additional facets are inclined towards each other at a very acute angle, so that in the illustrated embodiment, the 36 additional facets Gemstone between the lower part facets 10 ... 13 dome-shaped complete below.

Der Winkel α zwischen den Oberteil-Facetten 20...23 liegt je nach Edelsteinart zwischen 23° und 30°, der Winkel β zwischen den Unterteil-Facetten 10...13 und der Rondistenebene liegt zwischen 34° und 43°.The angle α between the upper part facets 20 ... 23 depends on Gemstone between 23 ° and 30 °, the angle β between the lower part facets 10 ... 13 and the Rondist level is between 34 ° and 43 °.

Das Erscheinungsbild dieses derart geschliffenen Edelsteins wird wesentlich durch die kuppelähnliche Anordnung der Zusatz-Facetten bestimmt, die durch die Vielzahl der auftretenden Neigungs- und Brechungswinkel bei gleichmäßig von unten einfallendem Licht ein lebendiges optisches Bild auf den Oberteil-Facetten widerspiegelt, das durch gleichmäßig angeordnete oder verteilte sternenähnliche Lichtwirkungen gekennzeichnet ist, die in ihrer Geometrie die natürlich vorgegebene Geometrie des Edelsteins lebendig wiedergeben.The appearance of this gemstone cut in this way will essentially due to the dome-like arrangement of the additional facets determined by the multitude of inclinations and Angle of refraction with light falling evenly from below reflects vivid optical image on the top facets, that by evenly arranged or distributed star-like Light effects is characterized, which in its geometry naturally reproduce the given geometry of the gem.

Claims (8)

  1. Gemstone on which respectively at least four facets of identical size are cut in the upper portion and the lower portion above and below the girdle plane, which have a parallel base edge, the angle (α) between an upper portion facet (20...23) and the girdle plane being smaller than the angle (β) between a lower portion facet (10...13) and the girdle plane, characterised in that a group of narrow, triangular additional facets is provided extending fan-like from a girdle plane between each of the side edges of the lower portion facets (10, 11, 12, 13), the narrow sides of which meet in the connecting lines between the tips of the lower portion facets (10, 11, 12, 13) the narrow sides of the additional facets of the respective adjacent group.
  2. Gemstone according to claim 1, characterised in that the angle (α) between each of the upper portion facets (20...23) and the girdle plane is between 23° and 30°.
  3. Gemstone according to claim 1, characterised in that the angle (β) between each of the lower portion facets (10...13) and the girdle plane is between 34° and 43°.
  4. Gemstone according to claim 1, characterised in that each group (40...43) of additional facets is formed from at least three additional facets, the longitudinal sides of which enclose. an acute angle of roughly 5° to 15°.
  5. Gemstone according to claim 1, characterised in that the planes of adjacent additional facets are inclined in respect of one another at an angle of roughly 1° to 3°, such that the altogether at least twelve additional facets terminate the gemstone downwards a dome-shaped manner.
  6. Gemstone according to claim 1, characterised in that the girdle plane has a circumferential facet band (30).
  7. Gemstone according to claim 4, characterised in that there is present in each group (40...43) a central additional facet, the narrow sides of which form the pyramid-shaped cap K of the lower portion, and with which at least one additional facet communicates on each side.
  8. Gemstone according to claim 1, characterised in that the girdle plane is circular or square.
EP97914110A 1996-02-19 1997-01-30 Polished gemstone Expired - Lifetime EP0883356B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19605876 1996-02-19
DE19605876A DE19605876C1 (en) 1996-02-19 1996-02-19 Jewel, e.g. diamond
PCT/DE1997/000196 WO1997029661A1 (en) 1996-02-19 1997-01-30 Polished gemstone

Publications (2)

Publication Number Publication Date
EP0883356A1 EP0883356A1 (en) 1998-12-16
EP0883356B1 true EP0883356B1 (en) 2002-04-17

Family

ID=7785650

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97914110A Expired - Lifetime EP0883356B1 (en) 1996-02-19 1997-01-30 Polished gemstone

Country Status (9)

Country Link
US (1) US6029474A (en)
EP (1) EP0883356B1 (en)
JP (1) JP2000505319A (en)
AT (1) ATE216199T1 (en)
AU (1) AU2150897A (en)
CA (1) CA2242616A1 (en)
DE (2) DE19605876C1 (en)
IL (1) IL125385A (en)
WO (1) WO1997029661A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19734036A1 (en) * 1997-08-06 1999-02-11 Helmut Buerger Process for determining a gemstone cut with high reflection, process for grinding a gemstone with high reflection and cut gemstone with high reflection
JP3643541B2 (en) * 2000-08-25 2005-04-27 株式会社ほほえみブレインズ Decorative diamond cut design
US6564583B2 (en) 2001-04-24 2003-05-20 Martin Gruber Gruber Jewelry with girdle-grooved stone
EP1694155B1 (en) * 2003-12-02 2009-02-11 Abittan Abrasives & Colour Me & Drop-a-Diamond & Pearl of Diamond & Faceted Rocks 100% Diamond Faceted gemstone
DE102008046972B4 (en) * 2008-09-12 2016-03-24 Helmut Bürger Faceted cut gemstone, especially diamond
US20120047948A1 (en) * 2010-08-31 2012-03-01 Nirav Modi Multifaceted gemstones with connecting link

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1557625C3 (en) * 1967-01-21 1973-10-25 Bernd 6581 Stipshausen Munsteiner Cut gemstone
US4020649A (en) * 1976-05-27 1977-05-03 Henry Grossbard Brilliantized step cut diamond
DE3202302C2 (en) * 1982-01-26 1984-01-26 Atelier-Juwel Georg Bunz, 7544 Dobel Cut gemstone, especially diamond
CH684301A5 (en) * 1991-03-19 1994-08-31 Diamine S A Cut shape for precious stones
DE4210995C2 (en) * 1992-04-02 1997-04-03 Ulrich Dr Freiesleben Cut gem, especially diamond

Also Published As

Publication number Publication date
DE19605876C1 (en) 1997-05-28
IL125385A0 (en) 1999-03-12
ATE216199T1 (en) 2002-05-15
CA2242616A1 (en) 1997-08-21
JP2000505319A (en) 2000-05-09
IL125385A (en) 2002-11-10
AU2150897A (en) 1997-09-02
EP0883356A1 (en) 1998-12-16
WO1997029661A1 (en) 1997-08-21
DE59707057D1 (en) 2002-05-23
US6029474A (en) 2000-02-29

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