The Marie-Thérèse Pink Diamond Ring. Photo: Christie’s Images Ltd. 2025. ... A Long-Lost Letter Penned by George Washington During the Revolutionary War Hits the Market for $275,000 ...

The auction comes six months after Christie's sold "The Rock" — a 228-carat egg-sized white diamond billed as the largest of its kind to go up for auction — for more than $21.75 million ...

The "Fortune Pink" diamond, an exceptionally rare giant gemstone, sold for more than $28.5 million at auction in Geneva on Tuesday to a private Asian collector.