Product Details
Mohs Hardness Scale
Small stone collection with 10 different stones with different hardness according to Mohs classification (hardness 1-10). It is thus possible to determine the hardness of other stones with this stone collection. The box contains: Talc, gypsum, calcite, fluorite, apatite, feldspar (orthoclase), quartz, topaz, corundum and diamond (needle).