This effect is incredible!! A diamond on a playing card magically jumps onto a beer cap. Your audience will see real magic!
Show a beer cap in one hand and a king of diamonds in the other. When you bring the playing card for a moment to the beer cap, you can see how a diamond on the playing card magically jumps to the cap. Show everything very clearly and gift both items as souvenirs.
I assure you that you will find other uses for this secret!