Just as all diamonds are different, so are all jewelers. When choosing a diamond, you are also choosing your jeweler - one you can trust for a lifetime. Established in 1933, Joseph Gann Jewelers in Boston, MA has earned an exceptional reputation by providing customers with the highest quality merchandise and superior service. Gann Jewelers offers an impressive collection of engagement rings, wedding bands, fine jewelry, men's and women's watches, dinnerware, gifts, and more. $200 gift certificate. Nosh before or after your visit with a bonus $25 Milk Street Cafe gift card.