Dunkin’s Diamonds opened a new showroom at 4106 Del Prado Blvd. S. in Cape Coral, marking a return to the market for the third-generation, family-owned jeweler. The nearly 4,000-square-foot store offers GIA-certified diamonds, designer jewelry, pre-owned Rolex watches, custom design services and repairs. The company also operates Southwest Florida locations in south Fort Myers at Gulf Coast Town Center and on U.S. 41 in Fort Myers, as well as in North Naples at Mercato and in Port Charlotte. Store hours are 10 a.m. to 7 p.m. Monday through Saturday and 12 p.m. to 5 p.m. Sunday.