Loading... Please wait...Scratch Plates are used to help identify the hardness of a rock or mineral specimen.
This is a thick tile to protect against breaking.
It also has safety ground edges to prevent injury.
Measures: 1" x 1"
Hardness testing with a glass plate:
To perform a simple mineral test simply scratch your mineral across the glass plate.
If the mineral scratches the plate, it is harder than 5.5 on Mohs hardness scale.
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