Tri-Flow Obsidian Rough Chunk! Orbicular Rhyolite Some can have what appears

Some can have what appears to be organic material present

It tends to take a matte polish

This particular slab was well before the 1970s

It is an old time rockhounding classic

Bloody Basin sure is a beauty

Tri-Flow Obsidian Rough Chunk! Orbicular Rhyolite Some can have what appearsTri 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