Stinking Water Plume Agate Slab - Botryoidal Center with White Plumes - Oregon High Desert mountain material Most of this is black

Most of this is black obsidian

Does have some fractures

These have gone through three sorting phases: once by us at the mines

Measurements(inches - largest - approx): 3

It is a little softer

Stinking Water Plume Agate Slab - Botryoidal Center with White Plumes - Oregon High Desert mountain material Most of this is blackStinking Water Plume Agate Slab Botryoidal Center with White Plumes Oregon High Desert This exceptional Stinking Water Plume features a botryoidal center surrounded by well defined white plumes that create a stunning display. From the high desert of southeastern Oregon, this slab showcases the classic plume patterns this location is famous for. It will make a fantastic display piece and take a satisfying polish when you're ready to work it.