1 large or several small pieces coal
6 Tbls. Bluing
6 Tbls. Water
1 Tbls. Ammonia
6 Tbls. Salt
food coloring
Soak coal in water at least a week. (soft coal works best)
Place coal in shallow fish bowl or container (glass). Mix bluing, water &
ammonia, pour over coal. Sprinkle salt over coal then dot with various food
coloring. Will start to grow a coral like growth in a week or two.