Petrified Wood Sphere Black Opal It is created by the

It is created by the lateric weathering of ultramafic rocks like serpentine in tropical environments

Please note that weathering should be expected if the sculpture is exposed to the elements over a long period of time

or form with quartz crystals

ash from volcanoes

Petrified Wood Sphere Black Opal It is created by thePetrified wood is a fossil that is formed when trees or other plant material get buried by layers of sediment, mud, ash from volcanoes, or other material. Once buried, the muck on top deprives the wood of oxygen and organisms. Water, rich in dissolved solids, then flows through the sediment and replaces the original plant material with silica, calcite, pyrite, or other inorganic material such as opal. Etruscans, ancient ancestors of Italy, used