The Smithsonian’s National Museum of Natural History has acquired the 2.33-carat "Winston Red Diamond," as part of the “Winston Fancy Color Diamond Collection.” ...

New Delhi [India], February 8 (ANI): The global diamond certification market is ... controlled by Gemological Institute of America (GIA) and International Gemological Institute (IGI), which ...

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 ...