Crystals

Starting with key of C (left above horizon) and moving clockwise: C-Seed atoms, Db-Bond types, D-Cleavage, Eb-Solubility, E-Color & fluoresence, F-Magnetic stones, F#-Mineral classes, G-Refractive index, Ab-Organic crystals, A-Rock association, Bb-Crystal systems (lattices), B-Piezo-electric & radioactive