Moh's Hardness Scale - Education Set phenakite the ancestor of the squid

the ancestor of the squid

Approximate size of 1 bowl: 25cm x 25cm x 7cm

(They were purchased while buying out another rock business- and no info was with them)

Location Mined: Alberta

Moh's Hardness Scale - Education Set phenakite the ancestor of the squidDescription: These Moh's hardness scales contain the 9 primary minerals of the Mohs hardness scale (excluding diamond) mounted on an identification plaque. A Mohs Hardness Scale sample kit is a collection of reference minerals with known hardness values, typically ranging from 1 (the softest) to 10 (the hardest), used to test and compare the hardness of unknown materials. Users can scratch the materials with one another to determine the relative