Stunning Boulder Opal Specimen Paleolithic Sunstone is a feldspar mineral

Sunstone is a feldspar mineral that creates an optical phenomenon known as "aventurescense"

Triceratops was a large plant-eating ceratopsian

The very first stone tools were not created by humans

The pink or reddish hue is caused by the element manganese

In regard to petrified wood colorization

Stunning Boulder Opal Specimen Paleolithic Sunstone is a feldspar 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.