6.8" Polished Maligano Jasper Slab - Indonesia

This is a Maligano jasper slab that has been cut and polished to a glossy finish. Maligano jasper is the trade name for a brecciated yellow, orange, red, grey, and blue-grey jasper found in Indonesia. Most of these specimens contain rivers of agate filling the gaps between the brecciated jasper. These specimens also often contain dendritic inclusions throughout.

About Jasper

Jasper is a term that can be applied to an opaque variety of chalcedony. The opaqueness is due to a higher concentration of impurities mixed with silica/quartz compared to other varieties of silica, such as quartz or agates. Like agate it may form in a wide variety of colors, and is often multi-colored. In most cases, jasper forms 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, but other factors can play a role in the color of what is now considered a jasper.