Quartz Powder (Filler) Filler Premium 38µm Filler Filler Supreme 38µm Filler Filler Medium 38µm Filler 45µm Filler 45µm Filler 45µm Filler Technical Specification Premium Supreme Medium SiO2 99.9% Minimum 99.7% Minimum 99.6% Minimum Density 2.66 gm/cm3 2.66 gm/cm3 2.66 gm/cm3 Hardness 6 – 7 Mohs 6 – 7 Mohs 6 – 7 Mohs Whiteness 94.0% Min 91.0% – 93.9% 89.0% – 90.9%