Tri-Flow Mix Old Stock Oregon Obsidian Rough Flatrate Aurora Borealis It has a very high

It has a very high mineral content

Measurements (Approx - Longest - Inches): 7

It generally is fairly hard and takes a great polish

These are all tumbler sized

Its a great conversation piece

Tri-Flow Mix Old Stock Oregon Obsidian Rough Flatrate Aurora Borealis It has a very highHere is a stunning batch of Old Stock Mahogany Obsidian from Glass Butte Oregon. This stunning material is a mix of Mahogany, Gold Sheen, Silver Sheen, and Tri Flow Obsidian. Each one is sure to cut stunning slabs for cabs, or could be used for knapping arrowheads. This is from the same mountain that Native Americans use to collect from and knap from across the West Coast. This is certainly one prime box of beautiful material you won't want to miss