Blue diamond with 29.6 carats unearthed by Petra at South African mine
The company Petra Diamonds discovered one of the rarest stones in the world: a 29.6 carat blue diamond worth around $60 million. The gem was unearthed at the Cullinan mine, in South Africa. The rock, described as an “outstanding vivid blue diamond with extraordinary saturation, tone and clarity”, is the biggest of its kind ever found in the … Read more