Contains minerals 1 through 9, as designated in the traditional Moh's Scale, plus 1 streak plate, information sheet and a carrying pouch.

A set of minerals that emit light as they are exposed to a long wave light source while in complete darkness (i.e. a black light). Contains: Calcite,...

The traditional Moh’s Scale assigned a "hardness" to ten key minerals with talc #1 the softest and diamond #10 the hardest. The first 9 minerals are...