World Gemological Services, based in Newport Beach, California, is a team of G.I.A. Graduate Gemologists providing clients with jewelry appraisals, gemstone analysis and identification, and luxury watch identification and grading services.

Gemological Institute of America (G.I.A.) 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 Service’s G.I.A. trained gemologists use modern gemological equipment and examination techniques in conjunction with a proprietary analysis and evaluation application in order to accurately serve clients ranging from walk-in customers to multi-national corporations.