Sheaths of crystals form plates and ultimately several mamillary structures (the largest is 2 cm across!) that reflect light and glow like you only dream of! It looks like they are coated with SUGAR, in person! The crystals are clear and slighly green-tinted. This is an unusual form and habit for Tsumeb...because it isn't from Tsumeb. Material from Berg Aukas was often sold OUT OF shops and dealerships in Tsumeb and the error passed on to collectors in the 1960s and 1970s. In retrospect, we know very well that this style of bundled translucent crystals is from Berg Aukas. Doesn't change its value here, or its desirability! They are equally rare specimens from an equally defunct mine. Purchased from Bill Larson in 1976