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 ...

Get more bling for your buck! Discover 7 of the best Costco jewelry finds worth buying right now, including diamond rings, luxury watches, and gold necklaces.

NEW YORK (Reuters) - Costco Wholesale Corp willfully infringed Tiffany & Co's trademarks by selling counterfeit diamond engagement rings bearing the luxury retailer's name and must face a jury trial ...

A federal jury told Costco to pay Tiffany and Co. $5.5 million in compensation for selling counterfeit Tiffany diamond engagement rings. Last year, a district judge ruled that Costco had knowingly ...