Tiffany sues Costco over fake diamond engagement rings

Jeweler says retailer isn’t authorized to sell its items

Anyone who recently proposed to his or her significant other with a Tiffany & Co. engagement ring might want to double-check that it’s the real deal.

Yesterday (coincidentally on one of the most romantic days of the year), Tiffany filed suit against Costco Wholesale Corp. accusing it of selling counterfeit versions of its diamond engagement rings. According to the complaint, Tiffany only sells its jewelry at its own stores, and Costco isn’t authorized to sell Tiffany items.

Ashley Post

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