GB/T 16554-2003

Abolished

Diamond grading

钻石分级

Standard Type

GBT

ICS

39.060

CCS

D59

Status

Abolished

Issue Date

2003-07-01

Implementation

2003-11-01

Centralized Committee

自然资源部（国土）

Issuing Authority

自然资源部（国土）

Application Summary AI generated

GB/T 16554-2003 specifies the grading rules for unmounted natural diamonds, including criteria for color, clarity, cut, and carat weight. It is primarily applied in the Chinese jewelry industry for quality assessment, certification, and trading of diamonds in retail, appraisal, and laboratory testing contexts.

Related Standards

GB/T 19719-2005 Jewellery-Determination of the release of nickel-Method of spectrometry GB/T 19720-2005 Platinum jewellery alloys-Determination of platinum and palladium-Gravimetric method after precipitation of diammonium hexachloroplatinate and dimethylglyoxime GB/T 19718-2005 Jewellery-Determination of nickel content-Method of flame atomic absorption spectrometry GB/T 16552-2003 Gems--Nomenclature GB/T 18996-2003 Determination of silver in silver jewellery alloys--Volumertic(potentiometric) method using sodium chloride or potassium chloride GB/T 9288-2006 Gold jewellery alloys - Determination of gold - Cupellation method (fire assay) GB/T 14459-2006 Sampling inspection rules by attributes for precious metal adornment GB/T 21198.6-2007 Determination of precious metals in precious metals jewellery alloys - Method using ICP spectrometry - Part 6：Difference method

Content extracted by AI. Not officially verified.