Armed with a hand grenade and pistols, the members of an international crime syndicate nicknamed the Pink Panthers stole sacks of emeralds, rubies and diamonds as large as birds' eggs to the tune of $105 million.
A number of the thieves -- all of whom were Serbian nationals -- were caught and convicted, but most of the money never was recovered.
In 2003, a Graff store in Japan was robbed in three minutes by armed thieves also believed to be members of the Pink Panthers and who made off with $37 million.
In October 2007, the same Harry Winston store in Paris was knocked over by a different group of robbers who made off with $20 million. Despite a $50,000 reward, no arrests have been made in that case.
Though less well-known than the famous Brinks robbery of 1950 ($2 million) or the 1978 Lufthansa heist at JFK Airport in New York in 1978 ($6 million) that inspired several films, the largest cash robbery in U.S. history took place in 1997 at Dunbar Armored, an armored car company located in Los Angeles.
Company employee Alan Pace and a band of thieves entered the armored car depot using Pace's keys and timed the robbery to avoid being caught by security cameras.
Once inside, they assaulted the guards and raided the vault he knew was opened on Friday nights, making off with $18.9 million.
Pace and several other members of the gang were arrested, after one of them, Eugene Hill, paid someone with a stack of bills still wrapped with Dunbar-branded cash straps.
Pace was sentenced to 24 years in jail. Some $10 million remains unaccounted for.