Anatolia Tile Plata Onyx Crystallo is a 3" x 12" polished bullnose. The surface carries a polished face with a full reflective shine. Expect variation of V2, a slight shift in tone between pieces that stops the installation looking printed. This is a finishing piece: a bullnose closes off the exposed edge where a tiled field meets drywall, a niche return or a step. On paper that means a DCOF of 0.50, at or above the 0.42 threshold ANSI sets for level interior floors expected to be walked on wet, Class 4 abrasion resistance and Mohs hardness 7. The edges are rectified, cut square after firing, so it sets with a joint of roughly 2 to 3 mm on a flat substrate. The body is glazed porcelain. Made in India.