Moh's Hardness Scale - Education Set stone jewelry Dimensions: 35mm x 26mm x

Dimensions: 35mm x 26mm x 9mm

and also naturally magnifies the stones

thought to help quiet the mind and encourage restful sleep or deeper meditation

Approximate Size of 1 piece: 8cm x 5cm x 4cmApproximate Weight of 1 piece: 100g

It’s a reminder to breathe deep

Moh's Hardness Scale - Education Set stone jewelry Dimensions: 35mm x 26mm xDescription: 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