Like that Nope diamond business a play on the Hope diamond, the most precious stone in the world and one with a curse on it, allegedly.
Reminds me of Myron Cohen’s joke about a certain diamond ring. Two women are seated together on a plane, and one notices a huge diamond worn by the other. The woman asks about it and comments about how large it is, just like the Hope diamond.
The other woman responds saying that it is indeed like the Hope and even has a name, it is called the Klopman diamond. She then continues that like the Hope it even comes with a curse. When the first woman asks what the curse is, the second woman responds, Mr. Klopman.