Description
made in Germany … ingredients lAl2O3 (aluminium) 99.0% to 99.6%, SiO2 (silicone) 0.03%,
Fe2O3 (iron) 0.07%, Na2O (sodium) 0.04%, CaO (calcium) 0.02%, MgO (magnesium) 0.01%
hardness 9, colour white, specfic gravity 3.95, crystal structure hexagonal,
grain size angular, grit size macro 120
