President and CEO

With gemological credentials earned at esteemed schools in New York, London, and the University of Nantes in France, Gregory E. Sherman is one of the most highly qualified gemologists and jewelry appraisers in the United States. Sherman has over 25 years of international jewelry industry professional with extensive experience in retail management, consulting work, gemological research, jewelry appraising, teaching, and professional speaking. He has numerous credentials and diplomas from the Gemological Institute of America, the Gemmological Association of Great Britain, the International Society of Appraisers, and the American Society of Appraisers.

He is the former Director of Marketing and Education at European Gemological Laboratory USA, one of the largest gemological institutions in the world. He has discussed jewelry topics on the radio and appeared on the History Channel’s Diamond Mines and on Shop NBC as a gemstone expert. He is coauthor of the booklet Changing the Color of Diamonds, the High Pressure High Temperature Process Explained, and has written numerous articles for the jewelry trade.

Sherman has taught gemology at the Fashion Institute of Technology in Manhattan and served as Director of Gemology Education at the California Institute of Jewelry Training where he instructed residence students in the educational programs of the Gemmological Association of Great Britain. Gregory E. Sherman also hosts an in-store appraisal event called the “For What it’s Worth Fine Jewelry Appraisal Roadshow”.

Major education and credentials

• Graduate Gemologist Diploma; Gemological Institute of America, New York
• Certified Appraiser of Personal Property Diploma; International Society of Appraisers.
• Master Gemologist Appraiser Program; American Society of Appraisers
• Gemmology Diploma; Gemmological Association of Great Britain, London
• Diamonds Diploma; Gemmological Association of Great Britain, London
• Advanced Scientific Gemology Program, University of Nantes, France

Additional professional development and courses

• International Society of Appraisers; Antique and Period Jewelry Course
• International Society of Appraisers; Expert Witness Course
• American Society of Appraisers; ASA Master Gemologist Appraiser Program
• The Gemmological Association of Great Britain; Intensive course in advanced gemological training
• American Society of Appraisers; GJ 205 course, Appraisal Theory, Methods, and Application

Notable publications, articles and media

• Changing the color of diamonds: the High Pressure High Temperature Process Explained
• The History Channel Modern Marvels: Diamond Mines
• Shop NBC, paid on-air gemstone expert; two appearances
• WKAKE, ABC WKCTU, and NBC Wichita KS, ABC Good Morning Utah Salt Lake; ABC Lexington Kentucky; Fox News Columbus Ohio, New Jersey News 12; ABC, NBC, FOX News Cincinnati Ohio & FOX News Dallas Texas

Research projects

• The morphology of rough diamonds, emphasizing unusual shapes and colors
• Causes of color in natural and synthetic diamonds
• Classification of diamond by Type
• Digital X-ray processes adapted for the examination of cultured pearls, natural pearls, and fracture filled diamonds
• Investigation of artificial diamond coloration through HPHT and irradiation
• Spectrophotometer investigation of synthetic and artificially colored diamonds
• Field research into the mining of rubies, sapphires, and jadeite on location in Burma (Myanmar)
• Examination of jade processing and fabrication cloisonné decorative arts in Beijing China