Named the Graff Venus, the stone has been graded a D colour, flawless type IIA with excellent polish, excellent symmetry and no fluorescence – the highest accolade a diamond can achieve.
The Gradd Venus was cut from a 357-carat rough diamond discovered in 2015 at the Letšeng Mine in Lesotho. From discovery to completion, the process of analysis, cutting and polishing took 18 months.
Special tools were developed in order to cut the stone and Graff said the process required the world’s most skilled and experience diamond craftsmen.
Laurence Graff, chairman of Graff Diamonds, said: “We were given a once in a lifetime opportunity with the Graff Venus and we created absolute perfection. I am proud to say that we delivered the very best.
“The Graff Venus is testament to the skill and expertise of our elite team. The stone itself is beyond words. It is the most beautiful heart-shape diamond I have ever seen.”