Tri-Flow Obsidian Rough Chunk! Richardson Rock Ranch Each one is guaranteed to

Each one is guaranteed to be authentic Dinosaur Bone from different formations within the united states

however since my fathers passing in 2021

Velvet Obsidian has a nice velvety display of flashes of color

Measurements (inches - longest - approx): 5 x 1

Some are large enough to at least glue and get 2-3 more slabs

Tri-Flow Obsidian Rough Chunk! Richardson Rock Ranch Each one is guaranteed toTri 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