Stunning Boulder Opal Specimen Paleolithic however this term is not

however this term is not common when describing Ruby in "Zoisite" / Anyolite

" Crinoids are remarkably adaptable animals and they are a good example of what is referred to as a "living fossil"

The very first stone tools were not created by humans

there must be a mineral rich water source close by

Triceratops was a large plant-eating ceratopsian

Stunning Boulder Opal Specimen Paleolithic however this term is notOpal is composed of hydrated silica. It is an amorphous silicate, meaning it does not form crystals. Opals are structurally composed of tiny spheres of silica, which when arranged in perfect geometry create the famous play of color associated with the stones. The arrangement of silica balls acts like a prism, which allows the rainbow spectrum of colors to be visible to the naked eye. Opal has been a stone of myth and mysticism for thousands of years.