World Gemological Services

World Gemological Services (WGS) is a GIA Graduate Gemologist–led appraisal firm based in Newport Beach that provides jewelry appraisals, ring appraisals, diamond and gemstone appraisals, and luxury watch identification for walk-in customers, retailers, and multinational clients worldwide. The company was founded in 2000 by Michael Cortez as Gemological Services of Southern California and expanded into World Gemological Services to serve an international clientele; World Gemological Services uses cutting-edge equipment, current evaluation techniques, and proprietary in-house software to deliver accurate, confidential appraisals and focuses on excellent customer service from its Newport Beach and Solvang locations.