EP2906073B1 - Schliff für schmuckstein - Google Patents

Schliff für schmuckstein Download PDF

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Publication number
EP2906073B1
EP2906073B1 EP13795402.0A EP13795402A EP2906073B1 EP 2906073 B1 EP2906073 B1 EP 2906073B1 EP 13795402 A EP13795402 A EP 13795402A EP 2906073 B1 EP2906073 B1 EP 2906073B1
Authority
EP
European Patent Office
Prior art keywords
gemstone
facets
pavilion
angle
set forth
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.)
Not-in-force
Application number
EP13795402.0A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2906073A1 (de
Inventor
Günther Blasbichler
Christian Loinger
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 EP2906073A1 publication Critical patent/EP2906073A1/de
Application granted granted Critical
Publication of EP2906073B1 publication Critical patent/EP2906073B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
    • A44C17/00—Gems or the like

Definitions

  • the invention relates to a gemstone with a chaton, in which connects to a flat panel a crown with obliquely sloping across the facets facets, the crown has major facets, which extend substantially from the panel to a Rondiste, where the gem has the largest transverse dimension and wherein below the Rondiste a pavilion of preferably pointed converging facets connects and wherein the gem consists of topaz.
  • the so-called brilliant cut has been found to be particularly aesthetic, as it is the so-called “fire” (“Fire”) of the diamond is particularly good effect and a high light output (“Light Return”) is achieved.
  • the fire and the light output are based on countless internal light reflections. These light reflections are caused by the individual facets, which stand in special angular relationships characterizing the respective cut. The cut and the material of a gemstone are thus decisive for the generated fire and the light output.
  • the value of the light yield indicates how much light, which occurs from a predefined solid angle range on the gemstone, falls back on the observer essentially along the axis of symmetry of the stone in a relatively narrow (eg opening angle 3 °) directed solid angle range.
  • the fire serves to assess the brilliance of a gemstone and designates its property to break the incoming white light into its spectral components.
  • the expression of this property depends on both the material (dispersion) and the cut.
  • a gemstone with a chaton section has a crown, also called upper part, with a defined number of lateral facets and a middle plane board, and a pavilion, also called lower part, with a defined number of 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 a so-called Rondiste (peripheral edge) can be arranged.
  • the gemstone can be ground symmetrically or asymmetrically.
  • the object of the invention is to further improve the aesthetic impression of a gemstone, which consists of topaz and a chaton, by optimizing optical parameters, in particular the fire and the light yield, and to provide a cost-effective alternative to diamond jewelry available.
  • the gemstone according to the invention which consists of topaz, has a chaton sanding, in which connects to a flat board a crown having main facets, which extend substantially from the panel to a Rondiste.
  • a chaton sanding in which connects to a flat board a crown having main facets, which extend substantially from the panel to a Rondiste.
  • the plane parallel to the panel, opposite which the main facets are inclined in the angular range according to the invention towards the panel plane, is a cross-sectional area (rondistal plane) imagined by the Rondist, in which the gemstone has the largest transverse dimension.
  • Rondistenebene is aligned perpendicular to the longitudinal direction of the gem
  • the luminous efficacy and the fire can be measured by standardized measuring methods.
  • One possible method of measurement is based on the FIGS. 5 and 6 described in more detail.
  • the values of the light output and the fire can also be mathematically simulated based on the geometry and the material of the gemstone.
  • the preferred angular ranges for the main facets of the crown are between 33.0 ° and 34.0 °, preferably 33.5 °, with respect to a cross-sectional plane parallel to the slab, that is the rondist plane.
  • the gazebo consists of three different types of facets.
  • the fire and the luminous efficacy in a gemstone according to the invention reach particularly high values when the angle of the main facets of the pavilion in relation to a cross-sectional plane parallel to the panel between 45 ° and 47 °, preferably between 45.5 ° and 46.5 ° is. Very particularly preferred is an angle of 46 °.
  • the crown of the gemstone which is also known as the upper part, in addition to the main facets and the panel on two other types of facets.
  • a first type of crown facet is given by eight crown facets, each adjoining the panel with one broad side. In one embodiment of the invention, these crown facets have an angle between the 19.5 ° and 21.5 ° degrees, preferably between 20 ° and 21 ° and most preferably 20.5 °, relative to the rondist plane.
  • the crown has 16 other crown facets, each with a broadside adjacent to the Rondiste.
  • the angle between these crown facets and the rondist plane is between 39 ° and 41 ° degrees, preferably between 39.5 ° and 40.5 °, and most preferably at 40 °.
  • the pavilion also known as the base, has 16 more pavilion facets besides the main facets, with eight of these facets merging to form a point or a vault at the opposite end of the panel, while eight more pavilion facets are interposed between the major facets with a broadside border the Rondiste.
  • the broadside opposite end of this pavilion facet is pointed converging and directed away from the Rondiste.
  • These pavilion facets which are adjacent to the broadside on the ridge strip, have, in one embodiment, an angle of between 48 ° and 50 °, preferably between 48.5 ° and 49.5 °, and most preferably 49 °, relative to the rim plane.
  • the angle between the glottal plane and those pavilion facets forming the tip is between 38 ° and 40.5 °, preferably between 38.5 ° and 39.5 ° and all preferably 39 °.
  • the total height of the gem is between 66% and 70%, preferably 68%, of the largest transverse dimension.
  • the total height corresponds to the distance from the end of the pavilion along the longitudinal axis to the board of the crown.
  • the largest transverse dimension of the gemstone results in the Rondistenebene. In the case of a circular plan view in plan view, the largest transverse dimension represents the diameter of this circle.
  • the height of the pavilion is the distance between the rondiste and the end of the pavilion facing away from the panel, measured along the longitudinal axis of the gemstone.
  • a particularly impressive fire and a particularly high light output result in the event that the height of the pavilion is between 46% and 50%, preferably 48%, of the largest transverse dimension of the gem.
  • the height of the crown which extends from the panel to the Rondiste and measured along the longitudinal axis of the gemstone, between 12% and 16%, preferably 14%, of the largest transverse dimension of the gem is.
  • the Rondiste is designed as a narrow peripheral edge.
  • the Rondiste can also be designed as a sharp edge between the crown and pavilion.
  • Fig. 1a shows a gemstone 1 according to the invention in a side view.
  • the Rondiste 4 is the area of the largest transverse dimension of the gem 1.
  • Schematically represented is also the axis of symmetry (longitudinal axis L) of the gem.
  • the crown 2 has three different types of facets 11, 12, 13, the main facets 11 ranging from the panel 5 to the rim 4 and are diamond-shaped.
  • This embodiment of the gemstone 1 has eight such main facets 11.
  • Eight other facets 12 abut with a broad side on the flat panel 5, which is aligned parallel to the Rondistenebene 7 and perpendicular to the longitudinal axis L of the gem 1.
  • Sixteen further crown facets 13 adjoin the Rondiste 4 with one broad side.
  • the facets 12 and 13 are each triangular in shape.
  • the pavilion 3 likewise has three different types of facets 8, 9, 10, with two of these pavilion facets 8, 10 adjoining the round border 4 with one broad side. Those of these facets 8 which extend furthest in the direction of the end 5 of the gemstone 1 opposite the panel 5 form the main facets 8 of the pavilion 3. Between these main facets 8, the triangular - shaped facets 10 abut the banding 4 with a broadside.
  • the pavilion 3 converges to a point 6, the tip 6 being formed by an arrangement of 8 further pavilion facets 9. These pavilion facets 9 are diamond-shaped.
  • FIG. 1b shows through the center of the crown, the longitudinal axis L of the gemstone 1, which is perpendicular to the flat panel 5 and the parallel thereto Rondistenebene 7 aligned.
  • Figure 1c shows a view from below of the pavilion 3 of the gemstone 1. At the top 6, which is formed by the adjacent Pavillonfacetten 9, the longitudinal axis L.
  • FIG. 2a shows a gem stone 1 'from topaz with a cut of the prior art.
  • the rays of light 14 entering the gemstone 1 'in the center of the main facet are only partially reflected back on the pavilion 3' due to the angle at which the pavilion facets and the crown facets are ground, in particular because of the angle of the main facets of the crown.
  • a portion of the rays is broken away or scattered sideways in the form of the rays 15a, 15b.
  • the beams 26a, 26b reflected back in the direction of observation and thus the luminous efficacy are correspondingly reduced.
  • FIG. 2b shows the same representation of a gemstone 1 according to the invention, wherein the light rays 14 in turn enter the center of the main facet 11 in the gem 1. Due to the special geometric arrangement of the various facets and in particular the main facets 11 of the crown 2, the luminous efficacy is significantly improved, since the majority of the rays in the area of the pavilion 3 is totally reflected, so that almost the entire proportion of light rays 14 entering the crown 2 is after optionally multiple reflection in the form of emerging from the crown 2 light beams 26a, 26b is reflected back to the viewer.
  • FIGS. 3a and 3b show a comparison of a gemstone 1 according to the invention with a gemstone 1 'of the prior art.
  • a proportion in the form of the light rays 15 is broken out of the gemstone 1', so that the Luminous efficacy is reduced in the form of reflected back in the viewing direction light rays.
  • FIGS. 4a and 4b which in turn show a comparison of a gemstone 1 'of the prior art with a gemstone 1 according to the invention, the effect of the arrangement of the pavilion facets can be seen particularly well.
  • the light beams 14 enter directly on the panel 5. Again, occurs in the gemstone 1 'of the prior art, a portion of the light rays 15 at the pavilion 3, while in the gemstone 1 according to the invention almost the majority of the rays 26 is reflected back in the direction of observation.
  • FIG. 5 shows a schematic view of a measuring arrangement for measuring the light return (light output) of a gem.
  • 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. Also darkened is a region 19 of the hemisphere 16, which is exactly opposite the gem 1 and has an opening angle ⁇ of 46 degrees.
  • the area 19 has a recess 20 with an opening angle ⁇ of 3 degrees.
  • This recess 20 serves as a narrow measuring field for a detector. It can thus be arranged above the recess 20, a luminous flux measuring detector.
  • 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 upwards by the gemstone 1 represents an average over almost all possible illumination arrangements and thus gives a quantitative measure of the light return (light output) of the gemstone 1.
  • the reflections take place on different facets, so that light directly on the first impact the gemstone, but also after one of several internal reflections to the recess is reflected back.
  • the FIG. 6 shows a measuring arrangement for the "Fire" value (fire value).
  • the gemstone 1 held by a holder 20 is illuminated in the direction of its main axis with a directed list from the light source 21 through the opening 22.
  • the light scattered back by the gemstone 1 is recorded in color on a measuring field 24.
  • the product values of saturation and illuminance of the light points recorded in the measuring field (25) are summed up and thus give the measure for the "Fire.”
  • FIG. 7 schematically shows the inclined arrangement of the main facet 11 of the upper part 2 in relation to a parallel to the panel 5 arranged cross-sectional area 7, for example, corresponds to the Rondistenebene.
  • the facet 11 is shown in the form of a plane. This also applies to the cross-sectional area 7.
  • the angle ⁇ between the planes is also taken between the associated normal vectors n and m.
  • the straight line g represents the intersection line between the planes 11 and 7.

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  • Adornments (AREA)
EP13795402.0A 2012-10-12 2013-10-09 Schliff für schmuckstein Not-in-force EP2906073B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA1108/2012A AT513466A1 (de) 2012-10-12 2012-10-12 Schliff für Schmuckstein
PCT/AT2013/000165 WO2014056008A1 (de) 2012-10-12 2013-10-09 Schliff für schmuckstein

Publications (2)

Publication Number Publication Date
EP2906073A1 EP2906073A1 (de) 2015-08-19
EP2906073B1 true EP2906073B1 (de) 2016-12-21

Family

ID=49641418

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13795402.0A Not-in-force EP2906073B1 (de) 2012-10-12 2013-10-09 Schliff für schmuckstein

Country Status (6)

Country Link
US (1) US10085530B2 (zh)
EP (1) EP2906073B1 (zh)
CN (1) CN104797159B (zh)
AT (1) AT513466A1 (zh)
ES (1) ES2618943T3 (zh)
WO (1) WO2014056008A1 (zh)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2506741A (en) * 2012-08-15 2014-04-09 Batesville Serv Inc Cremation urn with decorative applique applied thereto
US11452346B2 (en) 2017-10-09 2022-09-27 D. Swarovski Kg Cut for gemstone
JP1630970S (zh) * 2018-09-17 2019-05-13
CN111067208B (zh) * 2019-12-17 2021-11-16 李金华 一种内部呈现十字形的钻石及其加工方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2505096A1 (de) * 2011-03-07 2012-10-03 D. Swarovski KG Schmuckstein mit Chatonschliff

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USD460711S1 (en) * 2001-01-10 2002-07-23 Shlomo Cohen Diamond or precious stone
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Also Published As

Publication number Publication date
US20150201720A1 (en) 2015-07-23
CN104797159B (zh) 2018-01-26
US10085530B2 (en) 2018-10-02
EP2906073A1 (de) 2015-08-19
CN104797159A (zh) 2015-07-22
WO2014056008A1 (de) 2014-04-17
AT513466A1 (de) 2014-04-15
ES2618943T3 (es) 2017-06-22

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