The marquise diamond is back in a big way. Oval-shaped diamonds have reigned supreme over the past decade, but the celebrity ...

The journey to a new diamond cut ... the gem and after a lot of analysis, she alighted on the triangle, a shape to which she felt drawn. The trillion, an existing triangle cut, represents ...

The 555.55 carat black diamond has belonged ... little is known about its history before that. A billion-year-old black diamond, believed to be the largest cut diamond on Earth, is going up ...