Mark Thoma

• Registered Jeweler and Certified Gemologist Appraiser of the American Gem Society.
• Diamonds, Colored Stones, Gem Identification, and Gemologist diplomas from the Gemological Institute of America.
• Past President of the Indiana Jewelers Association.

Affiliations

• Williams Jewelry is an Accredited Gem Lab of the American Gem Society.
• Member of Jewelers of America
• Member of the Indiana Jewelers Association
• Member of the American Gem Society
• Member of the Independent Jewelers Organization
• Member of the Jewelers Security Alliance
• Member of the Greater Bloomington Chamber of Commerce