A rare, and previously relatively unknown historic diamond – The Farnese Blue – will be part of the Magnificent Jewels and Noble Jewels auction being presented by Sotheby’s in Geneva on May 15. The estimated price has been set at CHF 3.5 - 5 million (US$ 3,690,000 - 5,270,000).

This will be the first time ever that the diamond, which has been held by the same family for over three centuries, is being put on the market for sale.

The 6.16-carat pear shaped blue diamond is said to have been discovered in the Golconda mines of India, and was a part of the collection of Elisabeth Farnese (1692-1766), Queen of Spain by marriage to King Philip V (1683–1746). Blue was often identified as the ultimate royal gift and the diamond subsequently passed down through four of the most important royal families in Europe: Spain, France, Italy and Austria. Throughout this period, it was kept secretly in a royal casket. Excepting close relatives, and of course the family jewellers, no one knew of its existence. 

David Bennett, Chairman of Sotheby’s International Jewellery Division and Co-Chairman of Sotheby’s Switzerland, said: “It is difficult to put into words the excitement of holding between thumb and forefinger a gem discovered centuries ago, knowing it originated in the legendary Golconda diamond mines of India. This stone has witnessed 300 years of European history, and in colour is reminiscent of historic Golconda blue gems such as the Hope diamond.”

Dr Philipp Herzog von Württemberg, Chairman of Sotheby’s Europe and Managing Director of Germany added: “With its incredible pedigree, the Farnese Blue ranks among the most important historic diamonds in the world. From the first minute I saw the stone, I could not resist its magic and as such, it is a huge privilege to have been entrusted with this sale.”

The auction will also feature an array of signed jewels from prominent designers and jewellery makers, together with remarkable precious stones and antique jewellery.

Pic caption: The Farnese Blue
Pic courtesy: Sotheby’s