Black Obsidian Cobble - Spalled Face prospecting or butterscotch nephrite with one

or butterscotch nephrite with one polished face

and time that transformed nickel-rich soil into a gem-quality chalcedony

What makes this one stand out is the stout shape and the large uninterrupted top face

Red jasper typically ranges in color from deep brick red to reddish-brown

which also includes apophyllite

Black Obsidian Cobble - Spalled Face prospecting or butterscotch nephrite with oneMined from: Burns, Lake County, Oregon, U. S. A. Description: Black obsidian from the Burns area of Oregon is a natural volcanic glass with a clean, dark body color and a bright vitreous luster. A spalled face shows the fresh interior where the stone has broken with the curved, shell like fracture obsidian is known for, giving it sharp edges and a raw, glassy surface. It has a stark, clean look that makes it popular for display, flintknapping, and