GEMSTONE AND CORRESPONDING METHOD OF CUTTING
A gemstone having a crown, a girdle and a pavilion, wherein the girdle is shaped such that, when viewed in plan view, it is primarily bounded by four pairs of parallel straight edges. Three of the four pairs of edges are spaced by roughly equal spacing D1, while the remaining pair of edges is spaced...
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| Format: | Patent |
| Sprache: | eng ; fre |
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| Zusammenfassung: | A gemstone having a crown, a girdle and a pavilion, wherein the girdle is shaped such that, when viewed in plan view, it is primarily bounded by four pairs of parallel straight edges. Three of the four pairs of edges are spaced by roughly equal spacing D1, while the remaining pair of edges is spaced by a spacing D2, wherein D2 is greater than D1 by between 10% and 40%. Also provided is a method for cutting such a gemstone.
L'invention concerne un gemme ayant une couronne, un feuilletis et un pavillon. Le feuilletis est formé de telle manière que, dans une vue de dessus, il est principalement lié par quatre paires de bords droits parallèles. Trois des quatre paires de bords sont espacées d'une distance D1 approximativement égale, tandis que la paire restante de bords est espacée d'une distance D2 supérieure à D1 de 10 % à 40 %. L'invention concerne enfin un procédé de découpe d'un tel gemme. |
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