The next step of the identification process involves determining the hardness of your unknown. We will use a couple of simple objects to preform all of the necessary tests; your fingernail (H=2.5), a steel nail (H=5.0) and a glass plate (H=5.5).

First Test
Begin by attempting to scratch your unknown with your fingernail. Does it scratch the mineral? If, not try the next test.	If you were able to scratch the mineral CLICK HERE
Second Test
Attempt to scratch your unknown with the steel nail. Does it scratch the mineral? If, not try the final test.	If you were able to scratch the mineral CLICK HERE
Third Test
Attempt to scratch a knife blade with your unknown mineral. Does it scratch the knife?	If you were able to scratch the knife blade CLICK HERE