Quartz Machining and Grinding, Material Properties DataMfr & distributor of ceramic, alumina, silicon carbide, sapphire, ULE glass, beryllium oxide, quartz, boron carbide & nitride & silicon nitride materials to produce various wear, high temperature & corrosion resistant products that are used for aerospace, medical & industrial applications. Services include fabrication, machining,.properties quartz grinding,The Quartz Page: Physical PropertiesSep 4, 2011 . When it comes to physical properties, quartz is pretty much an average mineral and does not show outstanding or extreme properties. ... The Rosival grinding hardness is a relative measure, like the Mohs scale, but based on an exact procedure: The amount of material removed from the probe by grinding.