Tile looks like black slate. When put on wall, the tile takes on colors, see picture of tiles installed. These are left over from a renovation job.They were worth $7.49/sqft 1 box of 12 x 18: 7 pc/case = 10.17 sqft 3 boxes of 12 x 12 : 12 pc/case = 11.62 sqft/case = 35 sqft Total of 45 sqft No partial purchase, selling all as one item. MAKE ME A REASONABLE OFFER