DB12/T 500-2013
Diamond Quality Rating (English Version)
- Standard No.
- DB12/T 500-2013
- Language
- Chinese, Available in English version
- Release Date
- 2013
- Published By
- Tianjin Provincial Standard of the People's Republic of China
- Latest
- DB12/T 500-2013
- Scope
- This standard specifies terms and definitions, diamond quality, diamond quality grade classification and scoring rules, and diamond quality grade evaluation certificates. The color grading in this standard applies to natural colorless to light yellow (brown, gray) color series polished diamonds and natural colored polished diamonds. Cut grading applies to polished diamonds cut into standard round diamonds and non-standard round diamonds. The grading rules in this standard apply to polished diamonds with a mass greater than or equal to 0.0400g (0.20ct). Polished diamonds with a mass less than 0.0400g (0.20ct) can be graded according to this standard. This standard does not apply to the quality grade evaluation of natural antique diamonds, synthetic diamonds, and treated diamonds.
DB12/T 500-2013 history
- 2013 DB12/T 500-2013 Diamond Quality Rating
