Commodity thieves generally don’t worry about leaving some valuable pieces behind. The Louvre robbers tried to steal a crown that had belonged to Empress Eugénie, featuring eight gold eagles, 1,354 diamonds, 1,136 rose-cut diamonds and 56 emeralds. But they abandoned it in their haste to leave.

A group of thieves posing as construction workers pulled off a brazen jewel heist inside the world's most visited museum: the Louvre