Stuart Robertson, GIA GG., is an award-winning gemologist and appraiser. He is president of Gemworld International, Inc., and serves as research director for the company’s publication, GemGuide. Stuart is the immediate past-president of the Accredited Gemologists Association. He is also a senior member of the National Association of Jewelry Appraisers and serves as conference chair.

Stuart has extensive experience as an appraiser. He completed the International Society of Appraisers, Appraisal Principles Core Courses in 1993. Today, he limits his appraisal assignments to special projects, trial consultant and expert witness work.

Stuart is a recipient of the prestigious Antonio C. Bonanno Award for Excellence in Gemology (2011.) He received the AIJV Valuer of the Year Award in 2014 and The Scottish Gemmological Association’s Catriona Orr McInnes Award in 2019.