Monday
Closed
Tuesday
10:00 am - 5:00 pm
Wednesday
10:00 am - 5:00 pm
Thursday
10:00 am - 5:00 pm
Friday
10:00 am - 5:00 pm
Saturday
Closed
Sunday
Closed
July 20, 2025 6:49 am local time
A.DeMello Gemological Laboratory is a premier jewelry store located in Marlborough, Massachusetts. The store is owned and operated by Arthur DeMello, an expert graduate gemologist (GIA) and independent jewelry and diamond appraiser. With over 23 years of experience, Arthur DeMello provides unparalleled expertise in diamond and jewelry appraisals for insurance, fair market value estate purposes, tax purposes, divorce, wills, tax-deductible donations, and other family and matrimonial jewelry financial issues. The store offers a wide selection of high-quality jewelry, including diamonds, gemstones, and precious metals. A.DeMello Gemological Laboratory is also a trusted diamond buyer and gemologist, offering accurate and reliable diamond grading and testing services. The store uses only the finest gemological equipment, including GIA/GEM Instruments, Sarin OPL England, Bausch & Laume Gran, Tanita, and American Optical. With 40 laboratory office locations throughout Massachusetts, Rhode Island, Connecticut, New York, and New Jersey, A.DeMello Gemological Laboratory is the go-to destination for all of your jewelry needs.
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