A diamond necklace that includes a flawless 163-carat diamond – the most important of its form to be auctioned – has fetched $33.5m (£25.5m) at a Christie’s occasion in Geneva.
The colourless diamond was taken from a 404-carat stone present in Angola.
The completed piece is comprised of white gold, diamond and emeralds.
The necklace was designed by Swiss jewelry maker de Grisogono and took greater than 1,700 hours to make, Christie’s stated.
It went below the hammer at Geneva’s Four Seasons Hotel following a sequence of public viewings in Hong Kong, London, Dubai and New York.
The necklace, named The Art of de Grisogono, bought for $33.5m – $29.5m plus $4m premium – exceeding pre-sale predictions of $30m.
The purchaser’s identification has not been revealed.
On Monday a diamond generally known as the Pink Star bought for a report $83m (£52m) at public sale in Geneva.
That diamond measures 2.69cm by 2.06cm (1.06 inches by zero.81 inches) and was set on a hoop.
Previously, Christie’s set an public sale report in May 2016 with the sale of a 14.62-carat diamond generally known as the ‘Oppenheimer Blue’ for $50.6m (£34.7m).