4.8" Polished Section of Blue Mountain Jasper - Oregon

This is a gorgeous, 4.8" wide section of blue mountain picture jasper that has been polished to a glossy finish on one side. Comes with an acrylic display stand.

Blue Mountain picture jasper is arguably one of the most astonishing varieties of jasper across the globe. This spectacular jasper is collected in southern Oregon in the Blue Mountains. You can recognize a specimen of Blue Mountain picture jasper by its dark, blue-black core often bordered by beige and green bands. However, its most noticeable feature is the inclusion of olive, tan and blue orbs that float throughout. This variety is a favorite of lapidarists and is often cut into cabochons for jewelry.

Jasper is a term that can be applied to an opaque variety of chalcedony (light does not pass through it). The opaqueness is due to a higher concentration of impurities mixed with silica/quartz. Like agate it may form in a wide variety of colors, and is often multi-colored. In most cases, jasper will occur when silica-rich fluids permeate throughout a soft sediment or volcanic debris deposit. The fluids then crystallize around the particles/impurities, resulting in a cementation process. Most often, the impurities present determine the coloration of the deposit following solidification, however other factors can play a role in the color of what is now considered a jasper.
Chalcedony var. Jasper
Near McDermitt, Oregon
4.8 x 3.3", 1.2" thick