This natural Black Green Tourmaline cluster in Feldspar matrix was sourced in Afghanistan for Rocks and Things Store. It is 25mm in width and weighs 10g. rare black Elbaite cluster, not Black Tourmaline. The Elbaite crystals are encased and astride a Clear Calcite crystal (17mm). There is a strong fluorescent reaction to UV light by a trace element or mineral that is not obvious in sunlight.
