Test the Hardness

For this next test you will need either a nail, paper clip, or glass jar.

For Jar, scroll down.

Does your nail or paper clip scratch the rock?

Nail or paper clip end makes deep scratches in the mineral.

Nail or paper clip end doesn't make any scratches on mineral.

If you have a glass jar instead choose from below.

(Be careful, use supervision if required).

Mineral can scratch deeply into the jar. When I wipe the powder away there is a scratch left on the jar.

Mineral cannot scratch jar. Powder might be left behind but when i wipe it away, no scratch remains on jar.