The 555.55 carat black diamond has belonged to its current owner for two decades but little is known about its history before that. A billion-year-old black diamond, believed to be the world's ...
In the '80s and '90s, gem-quality brown diamonds were worth about $1,500 per carat ... This is when the real value of the gem is determined. There's a huge demand for black opal, with lack ...
The 555.55 carat black diamond has belonged to its current owner for two decades but little is known about its history before that. A billion-year-old black diamond, believed to be the largest cut ...
Last week at Sotheby’s Dubai, a 555.55 carat ... value of the diamond itself. The Enigma’s mysterious origins The Enigma, which has 55 facets, is currently the largest cut black diamond ...