1. The Louis XV crown Donn by: Louis XV Since 1722, the owner *Estimated Value Before Glass Replacement: $58.16 million This magnificent artwork was made for French King Louis VI in 1722 and used at the king's coronation. It was lavishly set with diamonds from the Royal Collection of France. Regent, Sancy, and Mazarin diamonds… Continue reading Top 10 Exquisite Gems And Jewelry Owned By The British Royal Family