| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| GB/T 18303-2001 | English | 199 |
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Days<=2
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Colour grading of polished diamond by visual matching
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GB/T 18303-2001
| Obsolete |
GB/T 18303-2001
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