Black Obsidian Cobble - Spalled Face prospecting Jadeite is a rare and

Jadeite is a rare and highly valued pyroxene mineral

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

It isn't perfect

The chlorite-rich coating or inclusion effect gives the upper growth a dark charcoal to nearly black look

These perissodactyls were adapted to browsing on leaves and vegetation in the ancient woodlands and grasslands of Oligocene North America

Black Obsidian Cobble - Spalled Face prospecting Jadeite is a rare andMined 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