Tri-Flow Obsidian Rough Chunk from Glass Butte Oregon Indonesian This chunk of Petrified Wood

This chunk of Petrified Wood is showing some white and coffee colored wood grain

and it looks like it should polish and cab well

Under normal conditions

After seeing some slabs of this

Cheetah stone also can often have blue druzy microcrystal pockets

Tri-Flow Obsidian Rough Chunk from Glass Butte Oregon Indonesian This chunk of Petrified WoodTri 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