Gruno's Diamonds is a family owned and operated jewelry store located in Madison, WI. We are a full service jeweler carrying the finest diamonds, watches and accessories. Gruno's is an official Rolex dealer in the Madison area. Weather you are looking for that perfect and unique engagement ring, a gift for a special occasion, or just want to treat yourself to some of the finest jewelry in the Madison area, Gruno's Diamonds is the place for you!