Necklace Prediction

Allow your friend to randomly choose a heart colour from a choice of four differently coloured hearts.

You then show your friend a beautiful jewelery box that has a necklace.
When you remove the necklace, it always has a pendant of the same colour as selected by your friend!
The box is otherwise shown to be empty!

A truly baffling trick to amaze everyone!
A superb trick to carry in your pocket.

FEATURES:
Secret instructions Enclosed.