Hardness 3 Showing 1–40 of 44 results Chrome Antigorite Trinagle x 540mm Woods Chromite mine, Lancaster Co. PA, USA. Y10378 Cuprian Powellite Round Cut Chile Y9599 Cuprian Powellite Round Cut Chile Y9600
Description. Specifiions. Reviews. Mohs' Hardness Test Kit Use this kit for "scratchtesting" substances to determine their Hardness according to the Mohs' Hardness scale. Instructions included. Used For Surface (s) Appliion Type (s) Weight. lb.