Tiffany has beaten Costco to the tune of at least $19.4 million in the trademark infringement battle over alleged knock-off rings that pitted the luxury jeweler against the membership warehouse giant.

When you think of where to buy your engagement ring, you might think of Zales, Tiffany & Co., or Blue Nile. But if you've ever walked past the diamond counters at a Costco warehouse, you might be ...

Tiffany & Co. and Costco Wholesale Corp. have finally reached a settlement agreement over the jewelry store's eight-year lawsuit accusing Costco of trademark infringement and counterfeiting for ...

Costco has been ordered by a federal judge to pay Tiffany & Co. more than $19 million for selling diamond rings that were identified as “Tiffany.” In her ruling, Manhattan judge Laura Taylor Swain ...

One thing you may have never expected to find at Costco — a place where we commonly go to stock up on things like paper towels and peanut butter pretzels — is a stunning collection of jewelry, ...

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NEW YORK (AP) — 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 ...

Costco's going to pay for selling "Tiffany" engagement rings that weren't made by Tiffany. U.S. District Judge Laura Taylor Swain ruled on Monday that Tiffany is entitled to $11.1 million in trebled ...

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 ...