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(Rainbow Tree) – Petrified Wood With Turquoise Opal On The Inside Discovered in Australia

Cover picture for the articleWood opal, in the simplest sense of the word, is a type of petrified wood that over the course of time has produced an opalescent sheen. Sometimes, in some very rare cases, the opal completely substitutes the wood. Opalized wood and opalized petrified wood are other names for this opalized...