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 ...

The savings run deep at Costco -- perhaps deeper than you've ever thought. Check out some of the wildest items you can buy ...

Tiffany & Co. is suing Costco for allegedly marketing engagement rings as "Tiffany" brand. The lawsuit claims Costco sold engagement rings in stores under the label "Tiffany" in stores but never ...

take a break from your grocery list and check out Costco's selection of engagement rings. I was surprised to learn just how wide the store's jewelry selection is. From a $500 band to a $340,000 ...