2305 - NATURAL CRYSTAL COLLECTION - 15 SPEC.

Under proper conditions, pure minerals will develop into a crystl form characteristic of that mineral. This collection includes specimens that exhibit crystal forms from the six crystallographic systems. Includes a study guide, terminology, and 15 crystal specimens, 1/4” - 1” crystals, in a compartmented tray. Grades 6-12. Geology is a required STEM subject.