6ST478: Rhyolite Round 6mm - 15-16" Strand
Rhyolite is a mottled mossy green, beige and grey volcanic rock with the occasional hint of peach. Rhyolite is sometimes confused for jasper, but is actually closely related to both granite and obsidian. Rhyolite is formed from rapidly cooling magma, often resulting in glassy inclusions. This stone can be found in large deposits near Yellow Stone Park in Wyoming, USA.