The Black coloring you see is actually a fossilized wood called Acoma Jet. A type of lignite, a precursor to coal, and is a gemstone. Unlike many gemstones, jet is not a mineral, but is rather a mineraloid. It is derived from wood that has changed under extreme pressure. Jet is a product of high-pressure decomposition of wood from millions of years ago, commonly the wood of trees of the family Araucariaceae. Jet is found in two forms, hard and soft. Hard jet is the result of carbon compression and salt water; soft jet is the result of carbon compression and fresh water. Native American Navajo and Pueblo tribes of New Mexico were using regionally mined jet for jewelry and the ornamentation of weapons when early Spanish explorers reached the area in the 1500s. Today these jet deposits are known as Acoma jet, for the Acoma Pueblo.
Its coloring makes the perfect backdrop for the design of the southwestern Night Sky. The shooting stars and moon are a cultured opal that is very reflective.The individual stars are actually individual pieces of sterling silver.