Willow Creek Jasper Ring, size 7
Willow Creek jasper and Sterling Silver ring.
From Vaughn Nagel
Jasper is an opaque rock of virtually any color stemming from the mineral content of the original sediments or ash. Patterns arise during the consolidation process forming flow and depositional patterns in the original silica rich sediment or volcanic ash. Hydrothermal circulation is generally thought to be required in the formation of jasper.