Sarana Tile lists Ek Calacatta as a 12" x 24" matte porcelain tile. The surface carries the veining and depth of quarried marble. It is finished with a matte face that holds light rather than throwing it back. On the residential side that covers kitchens, entry foyers and open-plan living areas. It also carries commercial use in retail floors, restaurant dining rooms and hotel lobbies. The nominal size is 12" x 24", listed metrically as 31x61cm. It appears in the Sarana Volume 8 catalogue at page 71. Sarana prices it by the piece.