An 'extraordinarily rare' diamond has been unveiled by Sotheby's and is set to sell for millions of pounds.
The 102.34 carat rock, cut from a stone mined in Botswana, has been hailed as the 'rarest white diamond' ever to come to market.
The diamond is available for private collectors to buy and is on display at Sotheby's New Bond Street Galleries, in London.
It is likely this new offering will be more expensive due to its brilliant cut, which is considered the most desirable.
The round shape is the most sought after shape for colourless diamonds as it gives the most light and life to the stone.
The 425-carat rough stone which yielded the Sotheby's diamond was mined by De Beers in Bostwana and subsequently cut and polished, over a period of six intense months, by Diacore's most experienced artisans in Johannesburg and New York.
The sale marks a year since the opening of the Sotheby's diamond boutique, which operates separately to the auction house and matches stones directly with the world's premiere collectors.
Describing the stone, Patti Wong, founder and chairman of Sotheby's Diamonds, said: 'This stone is over 100 carats of flawless perfection. In the course of my long career, which has brought me close to some of the greatest stones the earth has ever yielded, I have not encountered anything quite like this.
'With its outstanding weight, its perfect colour, clarity and cut, it is a masterpiece of nature brought to life by human hand, blazing with a brilliant firework-like display of almost every colour on the spectrum - mesmerising to behold.
'It is a huge privilege to mark the first anniversary of our London salon with the exhibition of such a superlative stone.'