Mahogany Obsidian Rough - Dark Smoky Variant from Glass Butte Jumpin' Jeep agate The red and black coloration

The red and black coloration comes from higher iron content in the stone

You will need to work around this area if cabbing

The material hasn't been mined in over 20 years

This would make a neat backlit piece or could work into a cool display or cabochons with exceptional depth

from a 1960s collection

Mahogany Obsidian Rough - Dark Smoky Variant from Glass Butte Jumpin' Jeep agate The red and black colorationOld stock cutting rough chunk of what appears to be a dark smoky mahogany obsidian variant from Glass Butte, Oregon. Sourced from an old stock collection of Glass Butte material. Personally I have never seen this exact type before it shows very dark mahogany mixed with black obsidian. Looking closely, the material is quite gorgeous and could open up significant creative possibilities for cabbing or carving. SPECIFICATIONS Material: Natural Tri Flow