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 ...

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 ...

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 ...

NUTLEY, N.J. (AP) — Authorities say a woman stole a $28,000 diamond ring from a New Jersey Costco store by replacing it with a much cheaper ring she had stolen from a different Costco. Izaebela Kolano ...