Many big-box stores like Costo sell diamond jewelry ... Costco had argued that Tiffany was a generic term used to describe a style of ring setting. If nothing else, that notorious case suggests ...

Dear Abby: My husband’s parents divorced when he was young, and he acquired a beautiful, solitaire diamond from his mother’s engagement ring ... We could sell it (it has been appraised ...

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. But the ...