Only the 13 diamonds are used to perform this wonderful effect. They are shuffled freely. One diamond is selected and returned. The packet is shuffled and then the amazing takes place. The selected diamond is spelled which leaves it in your hand every time. Such a good one. You will love it know. A real treasure in your impromptu card magic chest of effects with a borrowed deck. Works great in any card or magic routine. Simple plot. Great Effect. Very easy to do and fun to perform. Magic doesn’t have to be difficult to be amazing. Here is your proof.