GeoCentral - Mohs Mineral Hardness Scale Set

Learn to test, classify, and identify minerals using the tools, guide, and specimens included in this kit. This is an excellent gift for anyone interested in rocks and minerals. This mineral hardness scale set includes 9 mineral specimens (Talc, Gypsum, Calcite, Fluorite, Apatite, Feldspar, Quartz, Topaz and Corundum.) Also included is a nail, ceramic slice, magnifying glass and instruction sheet. For ages 8+.