EP0883356A1 - Pierre precieuse polie - Google Patents

Pierre precieuse polie

Info

Publication number
EP0883356A1
EP0883356A1 EP97914110A EP97914110A EP0883356A1 EP 0883356 A1 EP0883356 A1 EP 0883356A1 EP 97914110 A EP97914110 A EP 97914110A EP 97914110 A EP97914110 A EP 97914110A EP 0883356 A1 EP0883356 A1 EP 0883356A1
Authority
EP
European Patent Office
Prior art keywords
facets
additional
angle
rondist
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.)
Granted
Application number
EP97914110A
Other languages
German (de)
English (en)
Other versions
EP0883356B1 (fr
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
Original Assignee
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/fr
Application granted granted Critical
Publication of EP0883356B1 publication Critical patent/EP0883356B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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 the features according to the preamble of patent claim 1.
  • Such a gemstone cut is known for example from DE-PS 15 57 625, where an equal number of upper part facets and lower part facets determine the appearance and its optical properties.
  • a comparable cut is known from DE 42 10 995 AI, where special angles between the upper-part facets and the lower-part facets are to lead to a particularly striking appearance of the cut gemstone, essentially through flat effects which differ in their brightness differentiate.
  • DE 27 20 267 C2 shows a diamond that has a very complex structure of ground surfaces, including narrow, triangular facets that are grouped together, widening like a fan from the area near the tip of the diamond to surrounding side facets.
  • the interplay of the multitude of different facets also leads to a complex, rather confusing appearance in its optical effect.
  • the object of the invention is, while maintaining the original shape of the diamond crystal, to apply a cut which offers a new appearance in terms of brilliance and brightness.
  • the fan-like group of additional facets on the lower part when viewing the gemstone from the upper part, leads to a reflection for the viewer in such a way that the four pyramid-shaped upper part facets per facet surface produce a radiating or star-shaped lighting effect, which in contrast to the previously known rather flat lighting effects in the known types of cuts mentioned at the outset.
  • the fourfold focusing of light leads to reflection phenomena, from which the entire surface of the diamond is penetrated several times.
  • 1 is a perspective view of the cut gem, obliquely from below,
  • FIG. 2 is a plan view of the gem in the direction of arrow A of FIG. 3,
  • Fig. 3 is a side view of the gem in the direction of Arrow C of FIGS. 4 and 4 is a bottom view of the gem in the direction of arrow B of FIG. 3.
  • the upper part of the gemstone rises above the square Rondist level, which consists of four upper part facets 20.
  • 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.
  • the common base side of the upper part facets and lower part facets is formed by a circumferential facet band 30 perpendicular to the circular plane.
  • Each group 40 ... 43 of narrow, essentially triangular, additional facets extend from the four corners of the Rondist plane 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 collide with the narrow sides of the additional facets of the neighboring group.
  • Each group consists of a central additional facet, the roof-like narrow sides of which form a pyramid-shaped cassette K of the lower part and to which four narrow, triangular additional facets are connected on both sides in the exemplary embodiment shown.
  • the central additional facet is also designed as a narrow triangle, but it is also possible (not shown) to provide the central additional facet with parallel side edges so that its effect is approximately the circumferential facet band 30 corresponds.
  • the planes of adjacent additional facets are inclined towards one another by a very acute angle, so that in the exemplary embodiment shown, the 36 additional facets terminate the gem between the lower part facets 10 ... 13 in a dome-shaped manner.
  • the angle network between the upper part facets 20 ... 23 is between 23 ° and 30 °, depending on the type of gem, the angle ⁇ between the lower part facets 10 ... 13 and the Rondist plane is between 34 ° and 43 °.
  • this gemstone cut in this way is largely determined by the dome-like arrangement of the additional facets, which, due to the multitude of angles of inclination and refraction that occur with light coming in uniformly from below, reflects a vivid optical image on the upper part facets, which is represented by uniformly arranged or distributed star-like lighting effects is characterized, which in their geometry reflect the naturally given geometry of the gem.

Landscapes

  • Adornments (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Saccharide Compounds (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
EP97914110A 1996-02-19 1997-01-30 Pierre precieuse polie Expired - Lifetime EP0883356B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19605876 1996-02-19
DE19605876A DE19605876C1 (de) 1996-02-19 1996-02-19 Geschliffener Edelstein
PCT/DE1997/000196 WO1997029661A1 (fr) 1996-02-19 1997-01-30 Pierre precieuse polie

Publications (2)

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

Family

ID=7785650

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97914110A Expired - Lifetime EP0883356B1 (fr) 1996-02-19 1997-01-30 Pierre precieuse polie

Country Status (9)

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

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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
US6564583B2 (en) 2001-04-24 2003-05-20 Martin Gruber Gruber Jewelry with girdle-grooved stone
EP1694155B1 (fr) * 2003-12-02 2009-02-11 Abittan Abrasives & Colour Me & Drop-a-Diamond & Pearl of Diamond & Faceted Rocks 100% Diamond Pierre precieuse a facettes
DE102008046972B4 (de) * 2008-09-12 2016-03-24 Helmut Bürger Facettiert geschliffener Edelstein, insbesondere Diamant
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 (de) * 1967-01-21 1973-10-25 Bernd 6581 Stipshausen Munsteiner Geschliffener Edelstein
US4020649A (en) * 1976-05-27 1977-05-03 Henry Grossbard Brilliantized step cut diamond
DE3202302C2 (de) * 1982-01-26 1984-01-26 Atelier-Juwel Georg Bunz, 7544 Dobel Geschliffener Edelstein, insbesondere Diamant
CH684301A5 (de) * 1991-03-19 1994-08-31 Diamine S A Schliff-Form für Edelsteine.
DE4210995C2 (de) * 1992-04-02 1997-04-03 Ulrich Dr Freiesleben Geschliffener Edelstein, insbesondere Diamant

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9729661A1 *

Also Published As

Publication number Publication date
IL125385A (en) 2002-11-10
WO1997029661A1 (fr) 1997-08-21
US6029474A (en) 2000-02-29
CA2242616A1 (fr) 1997-08-21
DE59707057D1 (de) 2002-05-23
EP0883356B1 (fr) 2002-04-17
JP2000505319A (ja) 2000-05-09
IL125385A0 (en) 1999-03-12
ATE216199T1 (de) 2002-05-15
AU2150897A (en) 1997-09-02
DE19605876C1 (de) 1997-05-28

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