This Specimen has been sold.
10.8" Tall, Picture Jasper Freeform - Madagascar
This is a large hand polished piece of picture jasper found in the deserts of Madagascar. The entire specimen is polished and the base has been cut flat to allow it to stand up nicely on a flat surface.
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.