Petrified Wood Slab Opal This naturally occurring form of

This naturally occurring form of relatively common pyrite remains highly sought after by collectors as a specimen or for use as a gem or in jewelry

A silicone-based mineral closely related to quartz and agate

fossils of Knightia eocaena and their close relatives are popular among both amateur and seasoned collectors due to their delicate preservation of detail

a crystal occurring in a wide variety of colors and forms

Petrified Wood Slab Opal This naturally occurring form ofPerhaps the most well known fossil material in the world, petrified wood is not wood at all but rather the fossilized remnants of trees from millions of years ago. Tree trunks, limbs, and branches that died under conditions that favor fossilization gradually become replaced with minerals until what remains is a replica of the original piece of wood consisting entirely of mineral material. Like the trees they capture the form of, each is unique and