| 摘要 |
PCT No. PCT/DE93/00304 Sec. 371 Date May 4, 1994 Sec. 102(e) Date May 4, 1994 PCT Filed Apr. 2, 1993 PCT Pub. No. WO93/19635 PCT Pub. Date Oct. 14, 1993.A diamond without plate is described, in which the facets of the upper part are more slanted toward the girdle level than the facets of the lower part. To create a diamond that, with the least possible quantity of material, gives one an impression of hardness and clarity when looking down on it, the angle between one of the equally large upper part facets and the preferably polygonal girdle level as well as the angle between one of the equally large lower part facets and the girdle level is chosen in such a way that seen from above, the girdle level appears in essentially homogenous, planar brilliance in which a central, shining star is imbedded.
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