Sotheby’s to offer for sale in Geneva in May largest Kashmir sapphire to appear at auction

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A highlight of Sotheby’s “Magnificent Jewels” auction in Geneva on May 11, 2021, will be a 1930s sapphire and diamond brooch, formerly in the Collection of Maureen Constance Guinness, Marchioness of Dufferin and Ava (1907-1998) and featuring the largest Kashmir sapphire ever to appear at auction – a 55.19-carat oval gem, alongside a cushion-shaped Kashmir sapphire weighing 25.97 carats (est. $2-3m / CHF 1.9 – 2.8m).

Sotheby's

Credit: Sotheby’s

“With their mining history dating to just a few short years at the end of the 19th century, Kashmir sapphires are among the rarest coloured gemstones known to man,” said Benoit Repellin, Head of Sotheby’s Geneva ‘Magnificent Jewels’ auction.

“Coveted for their unique set of characteristics, including their unrivalled, rich cornflower blue hue, their soft, velvety texture and the fact that they retain their lustre in any light, these gems have over the years acquired an almost legendary status.

“Kashmir sapphires of over 30 carats are a very rare occurrence, so the appearance of a gem of 55.19 carats – the largest ever to come at auction – is an important event. Hailing a distinguished provenance and set as a stunning brooch alongside another Kashmir sapphire, it will undoubtedly evoke much interest among collectors.”

Sotheby's

Credit: Sotheby’s