Calcite for Mohs Scale of Hardness kits. Calcite is #3 on Mohs Scale of Hardness.
Calcite (calcium carbonate) from Australia
Approx dimensions: 3 x 3 x 1cm
Vitreous to Pearly lustre
Rhomboidal shape is clearly visible and crystal faces display typical perfect cleavage.
The specimen can be handled by students without damage if it is handled with care.
Specimen shown is representative only.