 It was used at his coronation and was embellished with diamonds from the Royal Collection.The new crown was made by Laurent Ronde, the French Crown jeweller.It originally contained a collection of Mazarin Diamonds, the Sancy diamond in the fleur-de-lis at the top of the arches, and the famous 'Regent' diamond, which was set in the front of the crown, as well as hundreds of other precious diamonds, rubies, emeralds and sapphires.