At Pittsfield Precious Metals, Diamonds and precious gems are inspected and evaluated by our GIA graduate gemologist. GIA is the World’s foremost authority in independent third-party diamond certification. The GIA’s mission is to increase consumers’ trust in diamonds and jewelry by upholding the highest standards of integrity, academics, science, and professionalism. They work toward this goal by providing jeweler and consumer education, conducting meticulous research, and developing state-of-the-art laboratory instruments for diamond inspections.