GB/T 30712-2014 Active National standards

GB/T 30712-2014 Provision of permissible errors for measurement of polished diamond mass

Publish Date: 2014-06-09 Implement Date: 2014-10-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 30712-2014

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Other non-metallic minerals

ICS Name: Jewelry

Publish Date: 2014-06-09

Implement Date: 2014-10-01

Pages: 4 pages

Scope

This standard specifies the requirements for the allowable deviations in the quality measurement of polished diamonds, the test methods, and the marking requirements.
This standard applies to the trade and quality supervision of polished diamonds settled by quality.
This standard applies to single polished diamonds with a weight of 0.040 g (0.20 ct) or more; single polished diamonds with a weight of less than 0.040 g (0.20 ct) and polished diamonds in group settings or bulk settlements may refer to this standard for implementation.