GB/T 9288-1998
Replaced
GB/T 18303-2008
Active
National standards
GB/T 18303-2008 Color grading of polished diamond by visual matching
GB/T 18303-2008 Color grading of polished diamond by visual matching
Basic Information
Standard Code:
GB/T 18303-2008
Standard Type:
National standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Special non-metallic minerals
ICS Name:
Jewelry
Publish Date:
2008-05-26
Implement Date:
2008-11-01
Pages:
5 pages
Scope
This standard specifies the basic conditions, operating procedures, and arbitration for the visual evaluation of the color (Cape series) of diamonds (after cutting and polishing). This standard applies to the visual evaluation of the color grade of diamonds that have been processed and polished. Diamonds that have been set can also be evaluated in accordance with this standard.
Development Information
Replace the following standards
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