The blue bloods are selling their jewels.

At Christie’s and Bonhams auctions in December, pearls formerly belonging to Queen Isabella II of Spain, and Kashmir sapphires from an European princess are going under the hammer.

The natural colored pearls (pictured below), headlining Christie’s Important Jewels auction on December 2 in London, were originally collected for Marie Christina of Bourbon-Two Sicilies, wife of King Ferdinand VII and Queen Isabella II’s mother.