The idea for StoneGroupLabs, LLC began in the late 90's as an effort to keep up with technologies that were outpacing the body of gemological knowledge in the industry. Its founders, Bear and Cara Williams, discovered that their services and expertise were becoming ever increasingly popular and demanded. Starting by aiding jewelers and appraisers to write more accurate and detailed appraisals, demand soon led them to step into the international forum in order to address nomenclature and improve standards of communication and knowledge.
Now, SGL supplies non-destructive advanced gemological services for the trade by issue stone reports, engage in research projects and consulting services regarding colored gemstones.
