Two RED and two WHITE chips are shown on both sides and placed on the table with the colored sides up.
Now a series of transpositions takes place. The RED chips change places with the WHITEs. At the end you openly place a WHITE chip in the spectators hand and show him the RED chip in your own hand.
The hands are closed. The WHITE should be in your hand and the RED in the spectators hand. But when you open your hand nothing has happened... You still have the RED one. Why? � Because the chip in the spectators hand is NOT WHITE anymore, but GREEN and GLITTERING.
Immediately all chips can be examined. Very easy to do. No slight of hands. No magnets or shell. Solid Brass!