solidcolours / Getty Images Costco may not be the first store that comes to mind when you think about shopping for a diamond ring. But the sparkly jewelry case often positioned near the wholesale ...

Whether it’s Tiffany or Costco, here’s what you need to know Reviewed by Margaret James Costco may not be the first store that comes to mind when you think about shopping for a diamond ring.

Costco’s chairman reveals the luxury items flying off shelves, from Dom Perignon to gold bars, Rolex watches, and more.