Mary Ellen Jasper Rough - "B" Grade from Minnesota - $3.00/lb

Mary Ellen Jasper is actually a fossil stromatolite. It has swirls of hematite mixed into a bright red background. very solid hard jasper. This fossiliferous material is 2.1 billion years old and the specie is Collenia undosa. Mary Ellen Jasper polishes with diamond, cerium or tin oxide. Mohs hardness 7.

Example of a Mary Ellen Jasper Cabochon