TriFlow Mahogany Obsidian Slab! Lapidary Stone Slab! Thunder Egg Please note that measurements

Please note that measurements

Some are also suitable for knapping arrowheads

as it is believed to have been tapped out

These triolbites are from the Middle Devonian period

5 to 2 inches long and is a random pull

TriFlow Mahogany Obsidian Slab! Lapidary Stone Slab! Thunder Egg Please note that measurementsTri 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