Scale of Harness Kit. 

Mohs Scale with 9 key minerals.  Kit includes : 1. Talc    2. Gypsum  3. Calcite 4. Fluorite  5. Apatite     6. Feldspar   7. Quartz    8. Beryl  9. Corundum.

This collection is the traditional Mohs Scale which assigned a "hardness" to ten key minerals with Talc #1 (the softest) and Diamond (Not included) #10 (the hardest). The first 9 minerals are included in this set. Nine specimens approximately 25x38mm, number-coded

This kit is 100% Asbestos free