GB/T 9288-1998
Replaced
GB/T 34545-2017
Active
National standards
GB/T 34545-2017 Emerald grading
GB/T 34545-2017 Emerald grading
Basic Information
Standard Code:
GB/T 34545-2017
Standard Type:
National standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Other non-metallic minerals
ICS Name:
Jewelry
Publish Date:
2017-10-14
Implement Date:
2018-05-01
Pages:
16 pages
Scope
This standard specifies the grading rules for natural unoptimized or clarity-optimized unmounted faceted and polished emeralds. This standard applies to the grading of natural unoptimized or clarity-optimized unmounted faceted and polished emeralds. The grading of non-faceted polished emeralds and mounted emeralds can be carried out in accordance with this standard.
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