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。