The French Blue

He was the restless son of a cartographer, she the illegitimate daughter of a French courtesan and a Persian king.

40 years and 60,000 leagues, the true-to-life adventures of Jean Baptiste Tavernier, his great love Madeleine de Goisse and the world's most famous diamond. Today known as the Hope Diamond but for the first 250 years of its existence it was known simply as The French Blue.