Santa's Magical Lump of Coal by Roy W. Eidem eBook
A magic wand disappears and re-appears. Then suddenly a lump of coal magically appears. The lump of coal disappears and re-appears three times and, on the third complete disappearance, it jumps into the pocket. Then the lump of coal multiplies into two lumps of coal, followed by its multiplying into three lumps of coal. To simplify spectator observation, two lumps of coal are removed, and the last lump of coal is squeezed tightly in the hand. This causes the coal to change "under pressure" into a diamond, which is given to the lady as a gift.
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