切工分级 meaning in Chinese

cut grading

These characteristics do not only determine the stone ' s quality , they can also be very useful in identifying the diamond , since every diamond is unique
对于花式琢型也可进行切工分级，但由于异形的缘故，只作大概估计。
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。