GB/T 9288-1998
Replaced
GB/T 36169-2018
Active
National standards
GB/T 36169-2018 Turquoise—Grading
GB/T 36169-2018 Turquoise—Grading
Basic Information
Standard Code:
GB/T 36169-2018
Standard Type:
National standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Other non-metallic minerals
ICS Name:
Jewelry
Publish Date:
2018-05-14
Implement Date:
2018-12-01
Pages:
17 pages
Scope
This standard specifies the terms and definitions of natural or optimized unmounted polished turquoise, the grading rules for turquoise color, texture, and surface cleanliness, the description of turquoise transparency, luster, and patterns, as well as the requirements for turquoise grading, quality measurement, and grading certificates. This standard applies to the grading of natural or optimized unmounted polished turquoise, and mounted polished turquoise can be used for reference.
Development Information
Referenced Standards
Related Standards
GB/T 17832-1999
Replaced
GB/T 17832-1999 Determination of silver in silver jewellery alloys—Volumetric (potentiometric) method using potassium bromide
GB/T 11887-2000
Replaced
GB/T 11887-2000 Jewellery-Fineness of precious metal alloys and designation
GB/T 18043-2000
Replaced
GB/T 18043-2000 Precious metal jewellery content non-damaged test method—X-ray fluorescence spectrometry
GB/T 18303-2001
Replaced
GB/T 18303-2001 Color grading of polished diamond by visual matching
GB/T 11886-2001
Replaced