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    • 3. 发明授权
    • Diamond cut
    • 钻石切割
    • US06430963B1
    • 2002-08-13
    • US09649920
    • 2000-08-30
    • Isaac FriedmanPhilip Katz
    • Isaac FriedmanPhilip Katz
    • A44C1700
    • A44C17/001
    • A brilliant gemstone cut, having a crown, a girdle and a pavilion. The crown and the pavilion are both brilliant cut. The crown has a flat table shaped as an equilateral n-sided polygon, n corner facets and n upper girdle facets. The girdle is also shaped as an n-sided polygon. The pavilion has n rib lines, which converge at a culet, n lower girdle facets, n bezel star facets and double n number of corner facets. The rib lines subdivide the pavilion into n equivalent parts.
    • 一个辉煌的宝石切割,有一个皇冠,一条腰带和一个亭子。 皇冠和亭子都是辉煌的切割。 冠有一个平面,形状为等边的n面多边形,n个角面和n个上腰带面。 腰带也被形成为n面多边形。 亭子有n条肋条,会聚在一个底部,n个下腰带面,n个bezel星形面和double n个角面。 肋条将展馆细分为n个等效部分。
    • 5. 发明授权
    • Diamond cut
    • 钻石切割
    • US07225642B2
    • 2007-06-05
    • US10658316
    • 2003-09-09
    • Philip KatzIsaac Friedman
    • Philip KatzIsaac Friedman
    • A44C17/00
    • A44C17/001
    • A brilliant gemstone cut, having a crown, a girdle and a pavilion. The crown has a flat table shaped as an equilateral n-sided polygon. The girdle is also multi sided polygon. The corner, lower girdle, bezel and star facets are at significantly angles of inclination, with respect to the table to provide significantly improved brilliance.The upper corner facets are spaced from the girdle. The space between the corner facet vertices and the girdle is left open to be covered by a prong of a jewelry setting.
    • 一个辉煌的宝石切割,有一个皇冠,一条腰带和一个亭子。 表冠有一个平面,形状为等边的n面多边形。 腰带也是多边形。 角落,下腰带,表圈和星形面相对于桌子具有显着的倾斜角度,以提供显着改善的亮度。 上角面与腰带间隔开。 角面之间的顶点和腰带之间的空间保持打开,被珠宝设置的插脚覆盖。