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YS/T 1074-2015 Methods for chemical analysis of no solder precious metal jewelry(gold metal jewelry)―Determination of magnesium,titanium,chromium,manganese,iron,nickel,copper,zinc,arsenic,ruthenium,rhodium,palladium,silver,cadmium,tin,antimony,iridium,platinum,lead and 225.0 via email in 1~3 business day valid
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
GB 28480-2012 Adornment—Provision for limit of baneful elements 40.0 via email in 1 business day valid
QB 1132-2005 Jewellery-the provision of silver coatings tickness 60.0 via email in 1~3 business day valid
QB/T 1734-2008 Gold Foil 90.0 via email in 1~3 business day valid
GB/T 9288-2006 Gold jewellery alloys - Determiantion of gold - Cupellation method (fire assay) 120.0 via email in 1~3 business day valid
GB/T 28021-2011 Adornment—Determination of baneful elements—Method of spectrometry 60.0 via email in 1 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 1131-2005 Jewellery-the provision of gold coatings tickness 105.0 via email in 1~3 business day valid
GB/T 16554-2003 Diamond grading 210.0 via email in 1~3 business day abolished
GB/T 11888-2001 Jewellery--Ring-size--Definition,measurement and designation 45.0 via email in 1~3 business day superseded
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
QB/T 4188-2011 Precious metal alloy coatings jewellery--General technical requirements of plating 60.0 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
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