1 Scope
This Standard specifies a range of fineness1), mark, test method of precious metals and designation method for precious metal jewellery.
This Standard is applicable to precious metal jewelleries produced and distributed in jewellery industry of China. This Standard is also applicable to precious metal ornaments.
2 Normative References
The following normative documents contain provisions which, through reference in this text, constitute provisions of this Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this Standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies.
GB/T 9288 Gold Jewellery Alloys — Determination of Gold — Cupellation Method (Fire Assay) (GB/T 9288-2006, ISO 11426:1997, MOD)
GB/T 16552 Gems — Nomenclature
GB/T 16553 Gems — Testing
GB/T 16554 Diamond Grading
GB/T 17832 Silver Jewellery Alloys — Determination of Silver — Volumedtric (Potentionmetric) Method Using Potassium Bromide (GB/T 17832-2008, ISO 11427:1993, MOD)
GB/T 18781 Cultured Pearl Grading
GB/T 19720 Platinum Jewellery Alloys — Determination of Platinum and Palladium — Gravimetric Method after Precipitation of Diammonium Hexachloroplatinate and Dimethylglyoxime (GB/T 19720-2005, ISO 11210: 1995, MOD)
GB/T 21198.6 Determination of Precious Metals in Precious Metals Jewellery Alloys — Method Using ICP Spectrometry — Part 6: Difference Method
GB/T 23885 Jadeite Grading
GB/T 28480 Adornment — Provision for Limit of Baneful Elements
