I don’t think so. You’d have to be a very superstitious person to
believe that. One of the past owners, Harry Winston - the man to
donate the Hope to the Smithsonian, gleefully instructed his PR
people to hype up the curse angle. It’s a ploy often used to drum up
publicity. The Black Orlov diamond also had all sorts of stories
attributed to it which didn’t stand up on closer inspection. Funny
too that so many historical diamonds seem to have been stolen from
statues! When there is little historical documentation, it’s all to
easy to spin stories.
You might like to read two of my past blog posts:
Pearl