Auction house Bonhams has kicked off the autumn season with the sale of a rare blue diamond.

The extremely rare oval-cut fancy, intense blue diamond caught the eye of bidders around the global. Weighing 3.81 carats, the blue stone hails from a private British collection and sold for £2,322,500.

Head of jewellery for Bonhams UK & Europe, Jean Ghika, explains: “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 demonstratesthat the global appetitefor coloured diamonds remains as buoyant as ever.”


Bonhams has a track record in selling blue diamonds and holds two price-per-carat world auction records.

Blue was certainly all the rage in the first sale of the season as the second headline lot, a pair of late 19th century Kashmir sapphire earrings adorned with a 8.97ct sapphire and a 8.93ct sapphire, were fiercely contested and finally sold for £866,500 against the pre-sale estimate of £400,000-600,000.

White diamonds were also in demand at Bonhams during the three-hour sale which achieved £6,440,200, with 92% of lots sold by value.

Elsewhere, a rare piece from the 1970s by Andrew Grima, the doyen of modern jewellery design in Britain, also performed well at the auction.  The gold gem-set and diamond bracelet, dated 1973, features carved emeralds and cabochon sapphires of various sizes, mounted in 18 carat gold, interspersed with brilliant-cut diamond accents, sold for £23,750.

“With participation from our global client base, these results, particularly for blue diamonds, Kashmir sapphires and top quality white diamonds demonstrate the market is buoyant for the very bestitems,” adds Ghika.