What is the hardest rock? What affects its strength? - QuoraGranite, basalt, jade, maybe marble, maybe line. Glass is . The measurement scale is called the Mohs hardness scale and it has ten minerals on it.what is the hardness of basalt on the mohs scale,About Ohio Rocks and Minerals - Ohio Geological SurveyLava, granite, and basalt are kinds of igneous rocks. Wind, ice, and water ... A small set of the minerals in the Mohs scale of hardness can be purchased from.
what is the hardness of basalt on the mohs scale