I'm not 100% sure but I assume that it's just the one design.
If you take a link at this link: link
, you'll see that the Crystal Balls (which I have) have two separate designs inside of them so they are both listed.
I'd think that if they had different designs, EF would list them to give the buyer then option of which one they'd prefer. Then again, I'm not totally sure since I do not own these so don't quote me lol