Gemological Institute of America (GIA) Graduate Gemologist, and third generation jeweler, Michael Cortez founded Gemological Services of Southern California in 2000 to offer consultations for fine jewelry establishments and individuals throughout California. Within a few years, the company expanded to form World Gemological Services to provide services to clients from around the world.

World Gemological Services’s (WGS) GIA certified appraisers implement cutting-edge equipment and the latest evaluation techniques, complemented by our sophisticated in-house software, in order to satisfy customers ranging from walk-in customers to multi-national corporations.

Accuracy, confidentiality,  and excellent customer services continue to define WGS’s mission to provide the best possible appraisal experience for all of our customers.