... further oxide and stabilize the unstable Ti ions on the Crystal Shield, and fill in the micro pores on Crystal ... polished tiles), timberGranite, marble, sand stone (cautious for black stone)Granite, marble, sand stone, microcrystal stone, ceramic tiles, polished tiles and glass ... stonesStrong alkali de-waxing agent will fade the stone Acidic formula will bleach the stone, then (green, black or grey) ...