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Cut Gemstone Exhibiting Excellent Optical Brilliance

机译:切割宝石展现出卓越的光彩

摘要

A gemstone including a substantially rectangular girdle, a crown extending in a first direction from the girdle, and a pavilion extending in a second direction from the girdle opposite the first direction. The gemstone has 65 uniquely arranged and angled facets, 25 of which are in the crown, and 40 of which are in the pavilion. The height of the crown is preferably between 9½ to 13½% of the width of the stone, the total depth of the stone is preferably between 63-70.9% of the width of the stone, and the width of the table is preferably between 60-68% of the width of the stone. The crown has four sides, a table, and four bezel facets each positioned at a respective corner of the crown. Each of the four sides of the crown have a first break extending from the girdle toward the table, a second break extending from the first break toward the table, a third break extending from the second break to the table, and a pair of star facets provided between the third break and the bezel facets at each corner of respective side of the crown. Preferably, and relative to a plane parallel to a surface of the table, the first break is cut at an angle of approximately 35-45°, the second break is cut at an angle of approximately 30-40°, the third break is cut at an angle of approximately 25-35°, and the bezel facets are cut at an angle of approximately 20-30°.
机译:一种宝石,包括基本矩形的腰带,从腰带沿第一方向延伸的冠部和从腰带沿与第一方向相反的第二方向延伸的亭部。宝石具有65个独特排列且成角度的刻面,其中25个在冠中,其中40个在亭子中。冠的高度优选为石材宽度的9½至13½%,石材的总深度优选为石材宽度的63-70.9%,桌子的宽度优选为60-石头宽度的68%。表冠有四个侧面,一个桌子和四个表圈小面,每个面都位于表冠的相应角上。表冠的四个侧面各有一个从腰带向桌子延伸的第一断裂,从第一断裂向桌子延伸的第二断裂,从第二个断裂延伸到桌子的第三断裂和一对星形面设置在表冠各侧各角处的第三折痕与表圈小面之间。优选地,相对于平行于工作台表面的平面,以大约35-45°的角度切割第一裂口,以大约30-40°的角度切割第二裂口,以第三角度切割以大约25-35°的角度切割,并以大约20-30°的角度切割边框刻面。

著录项

  • 公开/公告号US2009183525A1

    专利类型

  • 公开/公告日2009-07-23

    原文格式PDF

  • 申请/专利权人 HERTZ HASENFELD;

    申请/专利号US20090357666

  • 发明设计人 HERTZ HASENFELD;

    申请日2009-01-22

  • 分类号A44C17;

  • 国家 US

  • 入库时间 2022-08-21 19:35:17

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