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Chinese National Standard Category: Special non-metal ore |
English Title: | Color grading of polished diamond by visual matching |
Chinese Title: | 钻石色级目视评价方法 |
Standard No.: | GB/T 18303-2008 |
Category No.: | D58 |
Issued by: | AQSIQ, SAC |
Issued on: | 2008-05-26 |
Implemented on: | 2008-11-1 |
Status: | valid |
Superseded by: | |
Superseded on: | |
Abolished on: | |
Superseding: | GB/T 18303-2001 Colour grading of polished diamond by visual matching |
Word Count: | 2500 words |
Similar Standards: | GB/T 18303-2008 GB/T 18303-2001 GB/T 16554-1996 |
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