Cheops' Amulet

A set of two pyramids glides along a chain and stops promptly at the command of theaudience.  A stupid old trick? On the contrary, for the pyramids can beopened at any time during the demonstration and shown to be completely empty.  Cheop's Amulet can also be worn as a necklace.

The pyramids are made out of gold-plated Sterling silver and the chain is of the fox tail variety.