Code of China Chinese Standard Classification Professional Classification ICS Classification Latest
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GB/T 14459-2006 inspection rules rules by attributes for precious metal adornment 105.0 via email in 1~3 business day valid
GB/T 28487-2012 Precious metal alloys chains—Determination of tensile strength—Method of tensile testing 120.0 via email in 1~3 business day valid
QB 1132-2005 Jewellery-the provision of silver coatings tickness 60.0 via email in 1~3 business day valid
GB/T 19718-2005 Jewellery - Determiantion of nickel content - Method of flame atomic absorption spectrometry 90.0 via email in 1~3 business day valid
QB/T 1690-2004 Provision of permissible errors for measurement of precious metals adornment mass 60.0 via email in 1~3 business day valid
GB/T 28485-2012 Coated adornment—Detection of nickel release—Method for simulation of wear and corrosion 60.0 via email in 1 business day valid
GB/T 21198.2-2007 Determination of precious metals in precious metals jewellery alloys - Method using ICP spectrometry - Part 2:Platinum jewellery alloys - Determination of platinum - Method using the 210.0 via email in 1~3 business day valid
GB/T 21198.1-2007 Determination of precious metals in precious metals jewellery alloys—Method using ICP spectrometry—Part 1:Platinum jewellery alloys—Determination of platinum—Method using a solution 180.0 via email in 1~3 business day valid
GB/T 18996-2003 Determination of silver in silver jewellery alloys--Volumertic (potentiometric) method using sodium chloride or potassium chloride 75.0 via email in 1~3 business day valid
QB/T 4113-2010 Color Grading of Fancy Colored Diamond via email in business day valid
GB/T 16553-1996 Gems--Testing 1020.0 via email in 1~10 business day superseded
GB/T 31108-2014 Classification and codes of jewelry inlay information 165.0 via email in 1~3 business day valid
GB/T 23886-2009 Determination of nacre thickness—Optical coherence tomography 120.0 via email in 1~3 business day valid
GB/T 18303-2008 Color grading of polished diamond by visual matching 75.0 via email in 1~3 business day valid
QB/T 1689-2006 Terms of precious metal adornment 135.0 via email in 1~3 business day valid
GB/T 18303-2001 Colour grading of polished diamond by visual matching 45.0 via email in 1~3 business day superseded
GB/T 16553-2010 Gems—Testing 1380.0 via email in 1~3 business day valid
QB/T 1131-2005 Jewellery-the provision of gold coatings tickness 90.0 via email in 1~3 business day superseded
GB/T 32022-2015 Adornment with precious metal coating 105.0 via email in 1~3 business day valid
GB/T 23885-2009 Jadeite grading 360.0 via email in 1~3 business day valid
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