BS DD 234-1996 标准详情
- 标准号:BS DD 234-1996
- 中文标题:分级抛光金刚石.术语和分类
- 英文标题:grading polished diamonds - terminology and classification
- 标准类别:英国标准
- 发布日期:1996-06-15
This Technical Report specifies the terminology and classification to be used for the grading and description of polished diamonds.This Technical Report shall only be used for natural, unmounted, polished diamonds. It shall not be used for synthetic
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