> It's very finely ground volcanic rock. No. "Diatomaceous earth is made from the fossilized remains of tiny, aquatic organisms called diatoms. Their skeletons

> It's very finely ground volcanic rock. No. "Diatomaceous earth is made from the fossilized remains of tiny, aquatic organisms called diatoms. Their skeletons are made of a natural substance called silica." http://npic.orst.edu/factsheets/degen.html http://npic.orst.edu/factsheets/degen.html