| 1. | The diamond cut ratios , such as girdle diameter , total depth , pavilion depth , pavilion angle , crown depth , crown angle , table size , girdle depth and the other related symmetry parameters , can be calculated with those key corners
该系统可用于成品钻石的切工分级、钻石加工过程的质量检验以及作为钻石销售环节中的促销手段。 |
