The Hot Rock — Donald E. Westlake

In the novel that spawned the most hilarious criminal caper series ever conceived, John Dortmunder proves he has what it takes to be an habitual offender. Dortmunder steals the same jewel not just once--not just twice--but again--and again--and again .. .

Dortmunder didn't want to swipe this stone. He didn't want to know from the Balabomo Emerald. But when one of to competing African countries--the nation of Talabwofinances the scheme, Dortmunder can be persuaded.

Talabwo has purchased a fiasco. As Dortmunder's gang strikes by car, helicopter, and train, one heist after another goes wrong. The gem keeps slipping away, inflicting on Dortmunder what is fast becoming the worst punishment of all--an emerald with a sense of humor.