| 摘要 |
PURPOSE: A natural rough diamond and a processing method of the same are provided to remove minimum materials from the rough diamond and to obtain distinguishable optical characteristic. CONSTITUTION: A natural rough diamond(1) includes two parallel sides(4, 5). The geometric sides of the rough diamond, matched to the parallel sides, determine the amount of a rough diamond. Several processed sides(6) are parallelly arranged between two different processed sides. At least one shape of the parallel sides is hexagon. Pairs of the hexagon are parallel. |
