OPENINGS >>?Tapper’s Diamonds & Fine Jewelry is opening its third store in Troy, Mich., in early September.  CLOSINGS >>?Island Jewelers, located in Oak Harbor, Wash., closed after 37 years on July 2, due to retirement of its owner, Jeff Mack. >>?The Movado Group closed its retail boutique division effective June 30. However, it will continue to sell through its 31 outlet stores and maintain the Movado Boutique in New York City’s Rockefeller Center as a flagship store.   >>?New Zealand chain Michael Hill announced on June 8 it will close eight of the 17 stores it bought from defunct Whitehall Jewelers. CRIME >>?A salesman at Fred Meyer Jewelers in Battle Creek, Mich., had an $8,200 diamond ring pulled off his finger on June 12, according to the Battle Creek Enquirer. A suspect was later arrested, thanks to an employee who gave