Learn about the different hardness scales through testing and observation! YOU can use Mohs Hardness
Scale to identify a mineral! This kit includes (almost) everything you will need to test common rocks and minerals:
1- Pre-1982 Penny
1- Porcelain Strike Plate
1 - Steel Screw
All the mineral specimens you will need for testing (excluding diamonds!)
A written guide to show you how to test any minerals or rocks you find.