Hendrick Lucifer's Gold Doubloon

Origin
Hendrick Jacobszoon Lucifer (1583 - 1627) was a Dutch-born pirate. His last name is referring to a lightning stick due to his use of fire and smoke to surprise his enemies. In 1627 Lucifer, with two other captains, attacked a two-ship Honduran treasure fleet, capturing the ship and its contents. Fighting hard against the soldiers on the ships he killed ten in close combat before taking several bullets. Regardless he continued to plunder riches only returning after being shot several more times, one in the chest. Transferring all of the loot to his own ship he went to rest in his cabin and was found dead, still clutching some treasures.

Effects
Possessor becomes unable to stop themselves from stealing gemstones of value, even at the cost of their own person