Stone Group Labs
A trade-only laboratory used in the United States for coloured stone testing and diamond verification.
Rekorden
Hvad det dækker
Godt at vide
Founded in 1999 by Bear and Cara Williams. The current site names no report products and gives no address, so no city is recorded. It lists instrumentation including ED-XRF, FTIR, Raman and UV-Vis-NIR and describes these as aiding geographic origin work, but it does not state that the laboratory issues country-of-origin opinions. Report queries go through an enquiry form rather than an online lookup.
Samlet fra stonegrouplabs.com, læs mere på 16. august 2026.
Vi kontrollerer forhandlere, ikke ædelstene. En laboratorierapport beskriver en bestemt ædelsten på en bestemt dato; den udgør ikke en værdigaranti, og det er ikke vores ansvar at stå inde for den.