Bruneau Jasper is a variety of jasper, and more specifically a type of picture jasper. It shows layered / orb (egg-shaped) patterns of earthy tones — commonly browns, reddish browns, creams, and sometimes hints of red, green, or orange.

The term “Bruneau” comes from the Bruneau River canyon in southwestern Idaho, U.S., where this jasper occurs. The host rock for this jasper is rhyolite, this slab still has much of the host rock still attached to the creamy jasper.

This is not a very good example of Bruneau, but it’s the one I currently have, Bruneau is no longer being produced so it’s hard to come by. If you mange to get some “old stock” jewelry made from Bruneau, it isn’t going to go down in value.

The material is exposed in about an 8 km length in canyon walls of the Bruneau River area. The Bruneau area is rugged, remote, and not easily accessed, which has limited extensive production and collection.
As of ~2009, Bruneau Jasper was reported to be no longer in regular production and is considered rare in trade.