I have a bit of quartz I'd love to shape into my own item. However, the hardness of quartz is (on the MOHS scale) a hardness of 7.Since a steel file is (I think) 5, what is a more preferable method?
quartz - hardness of 7, luster - vitreous feldspar - hardness of 6, luster - vitreous calcite - hardness of 3, luster - vitreous pyrite - hardness of 6.5, luster - metallic
