KLOPMAN DIAMOND

The Klopman diamond is a fabulous, legendaryand huge diamond, said to have a curse associated with it. The Klopman diamond was originally the subject of a traditional joke, a typical version of which is:
A businessman boarded a plane to find, sitting next to him, an elegant woman wearing the largest, most stunning diamond ring he had ever seen. He asked her about it.
“This is the Klopman diamond,” she said. “It is beautiful, but it’s like the Hope diamond; there is a terrible curse that goes with it.” “What’s the curse?” the man asked. She said “Mr. Klopman.”
Due to the use of the name “Klopman” and the somewhat dark humor, and the fact that it was one of Myron Cohen’s standards, this joke is sometimes characterised as Yiddish in origin. Some commentators maintain that names other than Klopman would not be as funny, and point to the fact that this joke has survived essentially unaltered for decades.