Purported to have originally been stolen from a sacred Hindu temple, the huge blue rock passed through the hands of countless Kings, Queens (including the ill fated paws of Marie Antoinette) and/or thieves. But beware, not only is this 45.52 carat rock the most famous gemstone in the world, but it also carries an awesome curse! My advice is to reenact the end of Titanic and let out a little squeak as you drop the gem over the side of a ship, then go back to your cabin to die peacefully in your sleep.