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| Chinese National Standard List: Special non-metal ore |
| Title | Standard No. | Implemented On |
| Color grading of polished diamond by visual matching | GB/T 18303-2008 | 2008-11-1 |
| Colour grading of polished diamond by visual matching | GB/T 18303-2001 | 2001-5-1 |
| Diamond Grading | GB/T 16554-1996 | 1997-5-1 |
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