The 10.38-carat kite-shaped gemstone, believed to have once belonged to Marie Antoinette’s daughter, Marie Thérèse of Angoulême, dates back to the mid-18th century. Although no official records confirm its early ownership, the diamond has long been linked to royal lineage.
After reappearing at a Geneva auction in 1996, the stone vanished from public view. Now mounted in a ring designed by Parisian jeweller JAR, it is on a world tour with stops in Los Angeles, Geneva, and Hong Kong.
Christie’s will present the piece on 17 June, expecting bids between €2.8 million and €4.6 million.
