Rare Diamond Discovered in South Africa

The 29.6 carat stone has been described as highly exceptional and valuable by Petra Diamonds- the company that owns Cullinan mines.

Blue diamonds are among the rarest and hence most precious of all diamonds.

Another deep-blue diamond from Cullinan mine was auctioned for $10.8m in 2012 and set a world record for the value per carat.

In 1905, the renowned Star of Africa blue diamond – the world's second largest cut diamond – was discovered at the Cullinan mine.

The pear-shaped 530-carat stone was presented to King Edward VII and became part of the British crown jewels.

South Africa is a world leader in diamond production.

By Diana Kariuki

Source: BBC