公开(公告)号：US20040051861A1

公开(公告)日：2004-03-18

申请号：US10458756

申请日：2003-06-09

发明人： William R. Bray

IPC分类号： G01N021/00

CPC分类号： A44C17/001 ,  A44C17/00 ,  G01N21/87

摘要： A gemstone rating system is provided particularly for rating the cut of diamonds in which particular cuts and features are measured and the results compared with and provided with a predetermined score depending upon deviations from a theoretical perfect cut; and wherein the deviation scores are summed and then subtracted from an initially perfect score to provide a universally comparable indication of quality of cut.

摘要翻译： 提供了一种宝石评级系统，用于评估其中测量特定切割和特征的钻石切割，并根据与理论完美切割的偏差相比较并提供预定分数; 并且其中将偏差得分相加，然后从最初的完美分数中减去，以提供普遍可比较的切割质量指示。

公开(公告)号：US20030192347A1

公开(公告)日：2003-10-16

申请号：US10121600

申请日：2002-04-15

发明人： Hadar Yaskil ,  Kobe Gertzman

IPC分类号： A44C017/00

CPC分类号： A44C17/001

摘要： A gemstone includes four equal concave portions, a table, a girdle, an upper portion and a lower portion. The upper portion has two stairs. The lower portion includes four surfaces which are broken by eight additional surfaces. Each of the eight surfaces is broken by another two surfaces.

摘要翻译： 宝石包括四个相等的凹部，一个桌子，一个腰带，一个上部和一个下部。 上部有两个楼梯。 下部包括被八个附加表面破坏的四个表面。 八个表面中的每一个被另外两个表面打破。

公开(公告)号：US20030154741A1

公开(公告)日：2003-08-21

申请号：US10350388

申请日：2003-01-23

发明人： Yoshinori Kawabuchi ,  Tamotsu Matsumura

IPC分类号： A44C017/00

CPC分类号： A44C17/001

摘要： A cut design of an ornamental diamond and an observation method of the diamond which an observer can perceive a more beauty, are disclosed. The cut design is a round brilliant cut comprising a girdle, a crown above the girdle and a pavilion below the girdle. A girdle height (h) is 0.026 to 0.3 times a girdle radius, a pavilion angle (p) of a pavilion main facet ranges from 37.5 degrees to 41 degrees, and a crown angle (c) of a crown main facet is within a range of satisfying: c>null2.8667nullpnull134.233 and p

摘要翻译： 公开了一种观赏钻石的切割设计和观察者可以感觉到更美的钻石的观察方法。 切割设计是圆形明亮的切割，包括腰带，腰带上方的表冠和腰带下方的凉亭。 腰围高度（h）为腰围半径的0.026〜0.3倍，亭部主面的亭角（p）为37.5度〜41度，冠主面的冠角（c）为 满足：c> -2.8667xp + 134.233，p <= x {（sin-1（1 / n）+ sin-1（1 / n.sin c））x180 / pi + 180-2c}，其中n： 钻石指数，pi：圆形常数，p：展位角度，以c为单位：冠度角度。 观赏钻石的切割设计为观察者提供了大量的视觉感知反射，当观察者在桌面上观察钻石时，观察角度小于20度的视线，并在桌面的中心垂直线。

公开(公告)号：US06591827B2

公开(公告)日：2003-07-15

申请号：US09891095

申请日：2001-06-25

申请人： Roy Fuchs

发明人： Roy Fuchs

IPC分类号： B28D500

CPC分类号： A44C17/001

摘要： A method for preparing a diamond having a six-pointed-star shaped girdle comprising: (1) providing a round diamond; and (2) grooving six equally spaced, equally-sized triangularly-shaped 120° angled grooves in the girdle of the round diamond. Also disclosed is a grooving machine comprising a dop, wherein the dop may be rotated between six equally-spaced stops.

公开(公告)号：US5970744A

公开(公告)日：1999-10-26

申请号：US203118

申请日：1998-12-01

申请人： Robert S. Greeff

发明人： Robert S. Greeff

IPC分类号： B28D5/00 ,  A44C17/00 ,  B24B9/16

CPC分类号： A44C17/001

摘要： A cut cornered mixed-cut square gemstone comprises a step-cut crown, with two steps and a table, a girdle and a pavilion. The crown and pavilion are substantially square with four equal sides, and corners about 1/3 the length of the sides. The pavilion sides and corners are defined by eight rib lines which extend substantially continuously from the girdle to a culet. Each pavilion side and corner has four facets, including a lower girdle star facet, two lower girdle facets and a lower bezel facet. The gemstone has the classic elegance of a step cut in the crown and attempts to achieve the good dispersion of a brilliant cut in the pavilion.

摘要翻译： 一个切割的混合切割的方形宝石包括一个分切冠，两步，一张桌子，一条腰带和一个亭子。 皇冠和亭子基本上是正方形的，四个相等的边，围绕+ E的角，为1/3 / EE +两边的长度。 亭子的侧面和角落由八条肋线限定，肋条从腰带基本上连续延伸到底部。 每个亭子的侧面和角落都有四个面，包括一个下腰带星形小面，两个下腰面和一个下边框面。 宝石具有经典的优雅，在皇冠上一步一步地削减，并试图在展馆中实现辉煌的切割。

公开(公告)号：US5462474A

公开(公告)日：1995-10-31

申请号：US248393

申请日：1994-05-24

申请人： Erling Hansen

发明人： Erling Hansen

IPC分类号： A44C17/00 ,  B28D5/00 ,  B24B1/00

CPC分类号： A44C17/001 ,  B28D5/00

摘要： A method, and product from the method, of faceting a gemstone in which the facets, when combined with the polishing/non-polishing of the facet form an image such as the Star-of-David. The image is visible when viewed through the table of the gem. On one end of a clear or substantially clear gemstone, a series of facets are made which combine to create lines and boundaries. Through selective polishing of the facets, usually as they are made, some of the facets so created are darker and more visible than the others. These darker facets assist in forming the Star-of-David, or other image, visible through the table of the finished gemstone.

摘要翻译： 一种方法以及该方法的产品，其特征在于，当与该平面的抛光/非抛光结合形成诸如大卫之星的图像时，其中的小平面与其相面。 当通过宝石的表格查看时，图像是可见的。 在一个清晰或基本上清晰的宝石的一端，制作了一系列方面，结合起来形成线条和边界。 通常通过选择性抛光小平面，通常它们制成的一些方面比其他方面更暗，更明显。 这些较暗的方面有助于形成大卫之星或其他形象，通过完成宝石的桌子可见。

公开(公告)号：US4306427A

公开(公告)日：1981-12-22

申请号：US84706

申请日：1979-10-15

申请人： Stanley W. Urban

发明人： Stanley W. Urban

IPC分类号： A44C17/00

CPC分类号： A44C17/001

摘要： A chrysoberyl gemstone cut in a modified brilliant style is provided. The gemstone has seven rows of facets, including a girdle comprising rectangular facets. Each row contains eight, ten or twelve facets. The bottom row of facets is visible as a rosette pattern when the gemstone is viewed through the table.

摘要翻译： 提供了一种以改良的辉煌风格切割的chrysoberyl宝石。 宝石有七排方面，包括一个包括矩形面的腰带。 每行包含八个，十个或十二个方面。 当通过表格查看宝石时，底面的小平面可视为玫瑰花纹图案。

公开(公告)号：US4083352A

公开(公告)日：1978-04-11

申请号：US763404

申请日：1977-01-28

申请人： Dmetro Andrychuk

发明人： Dmetro Andrychuk

IPC分类号： A44C17/00 ,  B28D5/00

CPC分类号： A44C17/001 ,  B28D5/00

摘要： This invention relates generally to a method for systematically and accurately increasing the brilliance and depth of color of a gemstone without the need to determine the pavilion and facet angles by trial and error.

摘要翻译： 本发明一般涉及一种用于系统地，准确地提高宝石颜色的亮度和深度的方法，而不需要通过试错来确定展厅和小平面角度。

公开(公告)号：US4020649A

公开(公告)日：1977-05-03

申请号：US690401

申请日：1976-05-27

申请人： Henry Grossbard

发明人： Henry Grossbard

IPC分类号： A44C17/00

CPC分类号： A44C17/001

摘要： A step cut stone with a straight edged polygonal shaped girdle has a generally pyramidal base and a crown with at least girdle and table breaks wherein at least one of these breaks is cut with triangular shaped facets.

摘要翻译： 具有直边多边形腰带的阶梯切割石具有通常为金字塔形的基部和具有至少带状和桌面断裂的冠部，其中至少一个这些断裂被切成三角形的小平面。

公开(公告)号：US3788097A

公开(公告)日：1974-01-29

申请号：US3788097D

申请日：1971-03-30

申请人： COLORANT SCHMUCKSTEIN GMBH FA

发明人： ELBE M

IPC分类号： A44C17/00

CPC分类号： A44C17/001

摘要： A brilliant gem having upper and lower facets which are inclined to a girdle plane and formed by lateral surfaces of pyramids. The angle between the lower facets and the girdle plane ranges from 37* to 45*, and is selected such that emerging light is dispersed in a dispersion angle of from 1* 20 minutes to 12* 57 minutes. The gem is also provided with a second plane parallel to the girdle plane, and contains an odd number of upper and lower facets in a ring of facets circling the gem.

摘要翻译： 一个辉煌的宝石，具有倾斜于腰带平面并由金字塔的侧面形成的上下面。 下面和腰面之间的角度为37°至45°，选择为使出现的光分散在1°20分钟至12°57分钟的分散角。 宝石还设置有平行于腰带平面的第二平面，并且在围绕宝石的小环的圆环中包含奇数数量的上下刻面。