Did you know you can buy diamond rings at Costco? And expensive ones, at that. The warehouse retailer said during its latest quarter ended May 12 it got a sales boost thanks to a customer purchasing ...

PHOENIX - Police have arrested a Mesa woman accused of stealing diamond rings at Costco stores across the Phoenix metropolitan area and swapping them out with fake ones. Keisha Joice is suspected of ...

CLIFTON, N.J. (CBSNewYork) – A New Jersey woman has been accused of pulling off a bait-and-switch robbery at a Costco. She wasn't stealing groceries though, she was after diamond rings. Izaebela ...

Costco Wholesale and Tiffany and Co. agreed to settle a long-running lawsuit over the warehouse retailer’s sale of “Tiffany” diamond engagement rings. The fabled jewelry store chain first sued Costco ...

Costco had to do a price check after noting a nearly $400,000 purchase at one of its stores during its most recent quarter. The whopping price tag was attached to one item: a diamond ring. The sale ...

Tiffany & Co has ended its more than 8-year-old lawsuit accusing Costco of trademark infringement and counterfeiting for selling generic diamond engagement rings bearing the “Tiffany” name. Lawyers ...

NEW YORK — A Tiffany & Co. subsidiary is suing Costco, claiming the wholesale-club operator has been selling engagement rings wrongly labeled “Tiffany” rings. The high-end jeweler filed lawsuit in U.S ...

On Thursday, Tiffanyannounced that it has filed suit in the U.S. District Court for the Southern District of New York against Costco Wholesale, alleging "trademark infringement, dilution, ...