Bling by Adam Topham

Your spectator selects a card, and then places the cards back into the box, you then explain that you are going to find their card in a unique way, by using a woman's best friend diamonds! You place your black handkerchief into your hand and the spectator pours diamonds into your hand with the hanky. You then pass the hanky to the spectator with the diamonds inside. And at the given time they shout out their card and open their hand to reveal the diamonds have spelt out their card. 

The effect could be used as a finale to end your favourite routine; it is only limited by your imagination...

Comes complete with:
Instructions explaining how to perform this truly dazzling effect.
A small bag of diamonds, and everything to make this minor miracle happen. All you need is your regular deck of cards.