Disclaimer
This app is an observation aid, not a substitute for laboratory testing.
For formal certification, consult an accredited gem lab.
Price ranges shown are general market indications.
They do not represent guaranteed buying or selling prices.
Google Analytics is used to measure traffic and improve the experience.
Primary sources: GIA, CGL and equivalent labs. Last reviewed: 2026-04-28
Operated by Shou Kitano — Licensed antique dealer, Kanagawa Prefecture Public Safety Commission, No. 452680013478
Contribute reference photos
Privacy Policy
