Sandstone Sandstone is a coarse grained sedimentary rock consisting of silica, calcium carbonate or iron oxide. The chemical constitution of sandstone is the same as that of sand the rock is thus composed essentially of quartz. The color of the rock is often determined largely by the cementing material, iron oxides causing red or reddish brown sandstone, and the other materials producing white, yellowish or grayish sandstone. When sandstone breaks, the cement is fractured and the individual grains remain whole, thus giving the surfaces a granular appearance.

Natural Sandstone Feature of the natural sandstone: Specific Weight - Approx. 2475 kg/mt3 Water Absorption - 3% to 4% by weight Acid Resistance - 3% HCL no modification Alkali Resistance - 3% KOH no modification Silica Content - 92% to 95% by mass Compressive Strength - 300 kg/cm2

Polished Sandstone Sizes and thickness of the polished sandstone: Size - 300 x 150 mm, 300 x 200 mm, 300 x 300 mm, 400 x 200 mm, 400 x 400 mm, 500 x 500 mm, 600 x 300 mm, 600 x 600 mm Thickness - 10 mm ± to 30 mm ±, calibrated: 10 mm ±, 12 mm ±, 15 mm ±, 20 mm ±, 25 mm ±.