Auctioneer Bonhams has sold a rare oval-cut blue diamond weighing 3.81 carats for £2,322,500 ($3 million, or $792,450 per carat). The Fancy Intense blue diamond comes from a private British collection. Jean Ghika, Head of Jewellery for Bonhams UK & Europe, said: “Blue diamonds account for only 0.004% of all diamonds mined and are therefore exceptionally rare and remain highly sought after. The price achieved in today’s auction demonstrates that the global appetite for colored diamonds remains as buoyant as ever.”
Bonhams said in a statement that it holds two price-per-carat world auction records: for a Fancy Deep blue diamond at $1.77 million per carat, and a Fancy greyish-blue diamond at $730,000 per carat. Meanwhile, a pair of late 19th century Kashmir sapphire earrings weighing 8.97 and 8.93 carats sold for £866,500 ($1.3 million, or $62,900 per carat) against their pre-sale estimate of £400,000-£600,000 ($520,000-$780,000).
White diamonds were also in demand at Bonhams during the three-hour sale which generated sales of £6,440,200 ($8.4 million), with 92% of lots sold by value. A top quality 11.00 carat Marquise-cut diamond, D color, VS1 clarity, Type IIa sold for £614,500 ($800,000) against an estimate of £200,000-£250,000 ($260,000-$320,000). A pair of Harry Winston diamond earclips, set with approximately 34.00 carats of diamonds, sold for £80,500 ($104,000), while a Harry Winston diamond necklace with 38.00 carats of marquise and pear-shaped diamonds, sold for £110,500 ($144,000).