TriFlow Mahogany Obsidian Slab! Lapidary Stone Slab! Marra Mamba Tiger Eye They first appeared during the

They first appeared during the Silurian Period (435 million to 410 million years ago) and were abundant and widespread in the seas of the Jurassic and Cretaceous periods (175 million to 65 million years ago)

It does not effect stability and should not keep you from doing anything with it

Sizes may range from tumblers to meaty cutters

it's gone for good

TriFlow Mahogany Obsidian Slab! Lapidary Stone Slab! Marra Mamba Tiger Eye They first appeared during theTri 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