15-1/2" Petrified Wood Slab, Nevada (with stand) Teeth (more than 8 feet long)

(more than 8 feet long) putting it among the largest of any land animal that has ever lived

and is a super deal for this quality material

small reptiles

The many colors in which corundum occurs are due to the presence of other trace minerals

“Seeding” a pearl means inserting a bead of a predetermined shape and size into the tissue of a mollusk in order to control the shape of the pearl

15-1/2" Petrified Wood Slab, Nevada (with stand) Teeth (more than 8 feet long)From ancient Greek meaning "wood turned into rock", Petrified Wood is an unique form of fossilization. In some instances all the organic matter has been replaced by minerals (usually a silicate, such as quartz) during a process called permineralization replacement. However, many petrified wood specimens undergo a unique fossilization process, where silicates bond with the cellulose structure of the wood, thereby preserving organic matter. Regardless