-
GB/T 43569-2023 in English
Jewellery and precious metals—Sampling of precious metals and precious metal alloys
valid
Issued on:2023-12-28
$588.00 -
GB/T 43447-2023 in English
Jewellery—Colours of gold alloys—Definition,range of colours and designation
valid
Issued on:2023-11-27
$644.00 -
GB/T 42433-2023 in English
Gem testing—Infrared spectroscopy method
valid
Issued on:2023-05-23
$2,940.00 -
-
GB/T 42438-2023 in English
Service specification for gems and jade traceability system
valid
Issued on:2023-05-23
$420.00 -
GB/T 42645-2023 in English
Gems testing—Ultraviolet-visible absorbtion spectroscopy
valid
Issued on:2023-05-23
$2,248.00 -
-
GB/T 42220-2022 in English
Appraisal for precious metal besetting jades process quality
valid
Issued on:2022-12-30
$196.00 -
GB/T 42221-2022 in English
Jewellery—Consumer confidence in the diamond industry
to be valid
Issued on:2022-12-30
$364.00