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Our Credentials

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 the Indiana Jewelers Association • Member of the American Gem Society • Member of the Independent Jewelers Organization • Member of the Greater Bloomington Chamber of Commerce • Registered Accredited Business of the Better Business Bureau