Naming authorities
GIA, CIBJO, FTC, GB/T, GSJ and Gem-A, and where they disagree.
By the numbers
- Naming organisations consulted
- 6
- Naming divergences
- 50
Pages in this section
Clause records and citations on this site
This table scrolls sideways on narrow screens.
| Authority | Jurisdiction | Clause-level records | Entries citing it |
|---|---|---|---|
| Gemological Institute of America (GIA) | United States, applied worldwide | 0 | 86 |
| CIBJO — The World Jewellery Confederation | International trade confederation | 642 | 433 |
| U.S. Federal Trade Commission (FTC) | United States (16 CFR Part 23) | 374 | 53 |
| GB/T 16552-2017 — Gems: nomenclature | China, national recommended standard | 454 | 433 |
| Geological Survey of Japan (GSJ) | Japan | 0 | 148 |
| Gem-A — The Gemmological Association of Great Britain | United Kingdom, applied worldwide | 2 | 48 |