Rare coloured diamond auction

Sotheby’s are planning an auction on Nov 17 in Geneva which will feature a collection of some 400 lots of rare natural-coloured diamonds and historic jewels estimated to fetch in excess of 29.5 million.

One of the most anticipated pieces is a pear-shaped fancy vivid blue with a modified brilliant cut weighing 5.96 carats – estimated to achieve between %4.4-$7.5m. There’s also a rare cushion-cut vivid-green weighing 2.52 carats which is the largest vivid-green ever to appear at auction and is expected to fetch between $3.1-$5m.

Aside from the diamonds is a ruby and diamond necklace from the 19th century, property of Mary, Duchess of Roxburghe. The necklace was created with 24 cushion-shaped rubies balanced with 24 similarly shaped diamonds, mounted in silver and gold and is estimated between $530,000 and $975,000.

A sapphire and diamond demi-parure, circa 1900, inherited from Grand Duchess Maria Pavlova by her daughter Princess Elena of Greece and Denmark, Grand Duchess of Russia, will also be featured in this auction and is estimated to fetch a price between $137,000 and $176,000.

Also sapphire brooch from society figure Daisy Fellowes made in Cartier’s London workshop in 1940 too promises to be the highlight of this auction. The iris shaped brooch with cushion-shaped sapphires and brilliant-cut diamonds is estimated to fetch between $152,000 and $249,000.

Besides pieces signed from famous jewelry houses like Boucheron, Bulgari, Cartier etc, this auction will also feature pieces from the collections of Mary, Duchess of Roxburghe, Grand Duchess Maria Pavlovna of Russia and famed society figure Daisy Fellowes.