Tri-Flow Obsidian Rough Chunk! Orbicular Rhyolite Weight: Approx 11

Weight: Approx  11

Weight: Approx 4 lbs 11 oz

This lot is from the last mining trip

Some can have what appears to be organic material present

This particular slab was well before the 1970s

Tri-Flow Obsidian Rough Chunk! Orbicular Rhyolite Weight: Approx 11Tri Flow Obsidian comes from Glass Butte Oregon, and is a gorgeous form of mahogany obsidian that often has multiple grains and currents of flow! Tri Flow can make some designer grade cabochons, as the obsidian between is often pure and almost completely see through when held to light or cut thin enough, and the waves of pattern are often in layers! The color generally comes from Magnetite that was present in the lava flow! Tri Flow Obsidian is