An unusual blue diamond that has spent yesteryear 300 years in Europe’s regal houses has been sold at auction within Geneva for $6. 7m (£ 5m).

The Farnese Blue was given as a wedding show Elizabeth Farnese, daughter of the Fight it out of Parma, when she wedded Philip V of Spain within 1715.

After that it passed down through the generations, moving through Spain to France, Italy plus Austria.

The six. 1 carat diamond comes from the particular famous Golconda mine of Indian.

It sold right after just four minutes of putting in a bid at Sotheby’s, easily passing the particular auction house’s estimate of $3. 5m-$5m.

“We had been expecting a good result but all of us started from $3. 5m and ended up with $6. 7m, so we surpassed our expectation, ” said Sotheby’s jewellery specialist, Daniela Mascetti.

“Good jewels, well-designed, high quality, with a signature, with a perfect… slot machine in time, in age, do very well. inch

According to the auctioneers’ website, the pear-shaped diamond once produced part of a tiara owned by ill-fated French Queen Marie Antoinette .

The identification of the new owner has not been exposed.