Montana Bark Jasper Slabs from Montana

Montana Bark is not a true jasper. Instead, it is more of a dolomite and is probably the fossilized remains of an ancient river bottom and is easy to cut.

Jasper is an opaque, microcrystalline form of quartz. As with any microcrystalline quartz, it is hard and takes an excellent polish with cerium or tin oxide.

Ruler is in INCHES.

Montana Bark Cabochon
Example of a Montana Bark Cabochon

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