Code of China Chinese Standard Classification Professional Classification ICS Classification Latest
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Standard No. Title Price(USD) Delivery Status Add to Cart
GB/T 21198.6-2007 Determination of precious metals in precious metals jewellery alloys—Method using ICP spectrometry—Part 6:Difference method $100.00 immediately superseded
GB/T 23885-2009 Jadeite grading $310.00 via email in 1~3 business day valid
GB/T 23886-2009 Determination of nacre thickness—Optical coherence tomography $120.00 via email in 1~3 business day valid
GB/T 28016-2011 Gold alloy jewellery—Determination of gold—Gravimetric method $100.00 via email in 1~3 business day valid
GB/T 28019-2011 Adornment - Determination of Chromium(Ⅵ) - 1, 5-Diphenylcarbohydrazide spectrophotometric method $55.00 immediately valid
GB/T 28020-2011 Adornment—Determination of baneful elements—X-ray fluorescence spectrometric method $60.00 immediately valid
GB/T 28021-2011 Adornment—Determination of baneful elements—Method of spectrometry $60.00 immediately valid
GB/T 28485-2012 Coated adornment—Detection of nickel release—Method for simulation of wear and corrosion $60.00 immediately valid
GB/T 28487-2012 Precious metal alloys chains—Determination of tensile strength—Method of tensile testing $100.00 via email in 1~3 business day valid
GB/T 28748-2012 Metadata for gems and jewelry products $750.00 via email in 1~3 business day valid
GB/T 29155-2012 Transparent jadeite(colorless) grading $210.00 via email in 1~3 business day valid
GB/T 30712-2014 Provision of permissible errors for measurement of polished diamond mass $80.00 immediately valid
GB/T 30713-2014 Microscopic method of inkstone identification $140.00 via email in 1~3 business day valid
GB/T 31108-2014 Classification and codes of jewelry inlay information $140.00 via email in 1~3 business day valid
GB/T 31390-2015 Appraisal for view stone $220.00 via email in 1~3 business day valid
GB/T 31432-2015 Dushan Yu―Denomination and lassification $250.00 via email in 1~3 business day valid
GB/T 31912-2015 Adornment―Mark $114.00 immediately valid
GB/T 32022-2015 Adornment with precious metal coating $100.00 immediately valid
GB/T 32862-2016 Sapphire grading $250.00 via email in 1~2 business day valid
GB/T 32863-2016 Ruby grading $220.00 via email in 1~3 business day valid
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