You know how on the rare occasion you'll break open a fresh egg and it will be slightly bloody, well the left side of this marble exhibits that. I think it was a fertilized marble! Anyway, that red sheen on the side definitely gives it a sunshine appearance so I can see why this fellow especially likes the marble even if it turns out to just be a game marble. I have some chinese checker marbles in the box that have a row of marbles that are absolutely outrageous....it can happen when all they're aiming for is a simple, one color marble distinguished from the other colors. David