Located at 99 Derby St in Hingham, Massachusetts, A. DeMello Gemological Laboratory offers a range of services for those looking to buy, sell, or appraise jewelry and diamonds. With over 23 years of experience, Arthur DeMello is an expert graduate gemologist (GIA) who provides independent appraisals for insurance, estate purposes, tax deductions, and more. A. DeMello has 40 laboratory office locations throughout Massachusetts, Rhode Island, Connecticut, New York, and New Jersey, and also offers home appointments for added convenience. DeMello specializes in appraisals for diamonds purchased from a variety of well-known jewelers, including Tiffany & Co., Cartier, and Van Cleef & Arpels. The lab uses only the finest gemological equipment, including GIA/GEM Instruments and Sarin OPL England, to ensure accurate and reliable results. Whether you're looking to buy or sell diamonds or need an appraisal for insurance purposes, A. DeMello Gemological Laboratory is the place to go for expert service and professional results.