Stone Group Labs
A trade-only laboratory used in the United States for coloured stone testing and diamond verification.
El registro
Qué abarca
Información de interés
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.
Recopilado de stonegrouplabs.com; puede consultarse en 16 de agosto de 2026.
Verificamos a los comerciantes, no las piedras. Un informe de laboratorio describe una piedra en una fecha concreta; no constituye una garantía de valor, y no nos corresponde a nosotros respaldarlo.