"The Thimblerigger's Tomb Game" Version 1.0

The definition of "Thimblerigger" means one who cheats! A swindling trick in which a small ball or pea is quickly shifted from under one to another of three small cups to fool the spectator guessing its location!
From the "merriam-webster dictionary"

Click on Tomb! Watch what happens!

Guess which "Gem" is under the 3 Skulls!