For 30 years, a Bismarck man has been cutting diamonds into gem stones and done it so well that he has quietly gained national respect and become one of the ...

Tiffany & Co. recently acquired a massive 71-carat rough yellow diamond—it's now been cut into two stunning emerald-cut stones that are now for sale.

The current record for the most expensive diamond or any gemstone sold at auction is held by the CTF Pink Star, a 59.60-carat oval mixed-cut diamond auctioned at Sotheby’s Hong Kong in April ...

The D-Flawless ‘Light of Africa’ diamond was cut from a 299.3-carat rough, unearthed from the famed Cullinan Diamond Mine. The collection of 12 JAR jewels from the estate of Ann Getty is ...