Stunning Boulder Opal Specimen Paleolithic there must be a mineral

there must be a mineral rich water source close by

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

Lake Superior Agates are the state mineral of Minnesota

Lazurite is said to aid in astral projection and other spiritual traveling

Stunning Boulder Opal Specimen Paleolithic there must be a mineralOpal 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.