7311 West Towne Way Madison, WI 53719 Phone No. 6088291525 http://www.grunos.com/ Jewelry Store, Diamond Buyer, Watch Repair Service, Jeweler 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... read full review »