Called bernwoodite, it’s one of two new minerals Korolev and his adviser at the AMNH, Kate Kiseeva, and their colleagues ...

Some vacations come with souvenirs. Others come with a certificate and a 3-carat gemstone. Across the United States, a handful of dig sites let visitors try their luck at unearthing real diamonds, and ...

Tiffany and Cartier may be able to get away with charging heavily marked-up prices for their diamond treasures without batting an eye, but other diamond merchants are facing a whole other playing ...

Add Yahoo as a preferred source to see more of our stories on Google. As with any significant investment, you will want to do your research — and an engagement ring is a huge investment. When shopping ...

The 'Ocean Dream,' 5.5-carat fancy vivid blue-green diamond sold for $17.3 million at the Christie's Magnificent Jewels, ...