BS DD 234:1996
分级抛光的钻石.术语和分类

Grading polished diamonds - Terminology and classification


 

 

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标准号
BS DD 234:1996
发布
1996年
发布单位
英国标准学会
当前最新
BS DD 234:1996
 
 
适用范围
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 diamonds, treated diamonds (other than is allowed for in 3.3), or for assembled stones(see 3.5). A terminology and classification for the colour of fancy coloured diamonds (see 5.1.2) is in the course of preparation. Test methods concerning the technical application of this terminology and classification are in the course of preparation.

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