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While it retails for $299.99, Costco's Black Friday sale is selling it for ... There are a total of 140 diamond stones ...

Costco's Executive membership gives you 2% cash back on purchases. But there are rules for where you can spend that money.

Discover Costco exclusives worth the membership. Read on for quality wines, best-selling olive oil, and cakes fit for any ...

Kim Kardashian wore not one, but two giant diamond rings while meeting her "new friend" Optimus, Tesla's humanoid robot.

Some of the gems may have featured in a royal scandal known as the "affair of the diamond necklace" that damaged the French ...