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WO2020027006A1 - Diamant taillé et son procédé de fabrication - Google Patents

Diamant taillé et son procédé de fabrication Download PDF

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Publication number
WO2020027006A1
WO2020027006A1 PCT/JP2019/029556 JP2019029556W WO2020027006A1 WO 2020027006 A1 WO2020027006 A1 WO 2020027006A1 JP 2019029556 W JP2019029556 W JP 2019029556W WO 2020027006 A1 WO2020027006 A1 WO 2020027006A1
Authority
WO
WIPO (PCT)
Prior art keywords
facet
girdle
facets
diamond
crown
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.)
Ceased
Application number
PCT/JP2019/029556
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English (en)
Japanese (ja)
Inventor
木下顕伸
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.)
Kokusaikouken Inc
Original Assignee
Kokusaikouken Inc
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 Kokusaikouken Inc filed Critical Kokusaikouken Inc
Publication of WO2020027006A1 publication Critical patent/WO2020027006A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
    • A44C27/00—Making jewellery or other personal adornments

Definitions

  • the girdle is inward of the crown from the center of the table facet to the center of the culet surface by 0.1 to 45 degrees inside the crown (however, the angle formed by the pavilion surface with the center axis).
  • a girdle facet having a girdle facet which is constituted by a girdle facet which is inclined below, and which has a girdle that increases the total reflection of a light beam incident from a table facet and reflected by a pavilion side facet.
  • each facet other than the table facet of the crown is arranged asymptotically with respect to the center axis in a table facet front view, and each facet except the culet of the pavilion is the center axis.
  • the round-cut diamond according to any one of the first invention to the third invention, which is arranged point-symmetrically with respect to.
  • the table facets are 9-sided, the number of facets constituting the crown excluding the girdle facets is 54 excluding the table facets, and the number of facets constituting the pavilion is The round cut according to any one of the first to fourth inventions, in which the number of facets is 32 without counting the culet as a surface except for the girdle facet, and the total number of facets is 88 including the table facet and the girdle facet. Offer diamonds.
  • the table facet is a nine-sided shape
  • the number of facets constituting the crown excluding the girdle facet is 54 except for the table facet
  • the number of facets constituting the pavilion is: Except for the girdle facet, the surface is 32 without counting the curette as a surface, and the diamond is designed by grinding a rough diamond or another cut so that the total number of facets is 88 including the table facet and the girdle facet.
  • the optically sparse medium 1 is air
  • the optically dense medium 2 is diamond. Therefore, when light is taken into the diamond from the air, total reflection does not decrease, but when light is emitted from the diamond to the air, total reflection can be caused. .
  • the reflection characteristics of this ideally cut diamond are such that light entering from the crown side, including the table facets, is not repeatedly emitted from the pavilion side, so that total reflection is repeatedly generated inside the pavilion (or only once). However, it is assumed that all the captured light is emitted from the crown side.
  • FIG. 7 shows a case where the girdle facet (the area indicated by g in the figure) has an inclination outward from the lowermost edge of the crown (that is, the inclination is 0.1 to 45 degrees outward with respect to the central axis).
  • the maximum incident angle reflected light and the limited incident angle reflected light match.
  • the acute angle formed by a line parallel to the table facet normal of the crown side facet is generally preferably 53.5 to 58.5 degrees (also in the present invention), but is more preferably 58.5 degrees than the acute angle 58.5 degrees. May also be large. For example, it has been found that 58.5 degrees or more and 75 degrees or less, more preferably about 63 degrees plus or minus 1 degree. As described above, when the angle of the crown-side facet is increased, the amount of light that enters from the crown-side facet increases, and the amount of light emitted from the table facet further increases.
  • each facet except for the table facet of the crown is arranged asymmetry with respect to the center axis in a table facet front view.
  • Each facet except for the culet of the pavilion is arranged point-symmetrically with respect to the central axis.
  • a typical diamond is configured such that the facet of the crown is point-symmetric with respect to a central axis passing through the center of the table facet and the culet.
  • ⁇ Embodiment 5> ⁇ Embodiment 5 of the Invention>
  • the invention according to the present embodiment is characterized in that in addition to the features described in the first to fourth embodiments, the number of cut surfaces to be performed in the round cut is specified to be 55 crowns and 88 pavilion total surfaces of 88 surfaces.
  • a straight line drawn through the central axis at an angle of 20 degrees with respect to a straight line drawn through the central axis from the vertex of the 9-sided facet of the table facet is formed as a table facet.
  • all the facets of the first to fifth facets are configured to pass through the vertex.
  • Codon refers to the color of a diamond. Subtle differences in color can have a significant effect on the value of a diamond, and two diamonds of equal clarity, weight, and cut can differ in value only in the color component. Diamonds come in a variety of colors. Colorless to pale yellow and pale brown diamonds are said to be in the normal color range. In the normal color gamut, the closer the diamond is to colorless, the higher the value. In addition, many diamonds reflect visible light called fluorescence when irradiated with ultraviolet light. Fluorescence includes blue, white, yellow, orange and the like. If the fluorescence is too strong, the appearance of the stone may appear cloudy, which is called “oily" and reduces the value of the diamond.
  • the cut configuration of the round cut in the present embodiment is expressed by a plane, it is desirable that the configuration is as shown in FIG.
  • the facet of the crown as shown in the upper part of FIG. 13, nine triangular first facets (1304) each having one side of a nine-sided face constituting the table facet and a table facet.
  • Nine vertices are set as the vertices of the self, nine other quadrangular second facets (1305) not in contact with the table facet in other portions, and a third facet (1306) of a triangle having one side of the second facet as one side of itself. And 18).
  • the configuration of the present invention according to the present embodiment is the same as the configuration according to any one of the seventh to tenth embodiments, except that the table facet is a octagon and the number of facets constituting the crown excluding the girdle facet is a table. Except for the facets, there are 54 faces, and the number of facets constituting the pavilion is 32 without counting the curette as a face except for the girdle facets, and the total number of facets is 88 including the table facets and the girdle facets.
  • the diamond is designed by grinding a rough diamond or other cut.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Adornments (AREA)

Abstract

Il existe une demande pour des diamants à découpe ronde dans lesquels la lumière entrant par la couronne, en particulier une facette de table, est totalement réfléchie par le pavillon et émise depuis même le rondis, de telle sorte qu'une zone lumineuse linéaire ou une zone sombre linéaire peut être observée ; et pour un procédé de découpe de ceux-ci. Afin de résoudre ces problèmes, la présente invention porte, en tant que première invention, sur un diamant à découpe ronde comprenant des haléfis inclinés de 0,1 à 45 degrés inclus (mais limités à un angle inférieur à l'angle formé par une face de couronne et l'axe central) vers l'extérieur à partir de la couronne par rapport à un axe central passant à travers le rondis depuis le centre de la facette de table jusqu'au centre de la surface de culasse, les haléfis réduisant la réflexion totale (c'est-à-dire la re-réflexion dans le diamant) de faisceaux lumineux qui sont entrés par la facette de table puis ont été réfléchis à partir des facettes côté pavillon, et augmentant la lumière émise par le rondis.
PCT/JP2019/029556 2018-07-31 2019-07-27 Diamant taillé et son procédé de fabrication Ceased WO2020027006A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018144309 2018-07-31
JP2018-144309 2018-07-31

Publications (1)

Publication Number Publication Date
WO2020027006A1 true WO2020027006A1 (fr) 2020-02-06

Family

ID=69232472

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2019/029556 Ceased WO2020027006A1 (fr) 2018-07-31 2019-07-27 Diamant taillé et son procédé de fabrication

Country Status (1)

Country Link
WO (1) WO2020027006A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000005993A (ja) * 1998-06-17 2000-01-11 Hisatake Shudo ダイヤモンドのカット方法及びダイヤモンドのプロポーション
JP2001513340A (ja) * 1997-08-06 2001-09-04 ビュルガー，ヘルムート 高反射率の宝石カット面を決定する方法、宝石を研磨して高反射率のものとする方法、および高反射率の研磨された宝石。
JP2003210221A (ja) * 2002-01-22 2003-07-29 Dianasun Kk ダイヤモンドのカット方法及びダイヤモンドのプロポーション

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001513340A (ja) * 1997-08-06 2001-09-04 ビュルガー，ヘルムート 高反射率の宝石カット面を決定する方法、宝石を研磨して高反射率のものとする方法、および高反射率の研磨された宝石。
JP2000005993A (ja) * 1998-06-17 2000-01-11 Hisatake Shudo ダイヤモンドのカット方法及びダイヤモンドのプロポーション
JP2003210221A (ja) * 2002-01-22 2003-07-29 Dianasun Kk ダイヤモンドのカット方法及びダイヤモンドのプロポーション

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