What Minerals Have A Hardness Of 3 SeniorCare2Share
Granite is an igneous rock known for being very hard Quartzite on the other hand is a metamorphic rock composed almost entirely of quartz the hardest material on earth Both granite and quartzite are very hard but on the Mohs scale of hardness from 1 to 10 with 10 being hardest quartzite has the slight edge
