1)natural 15;2)usual dimension of the 60: 300 x 300 x 20/30mm, 600 x 600 x 20/30mm, 3)we can supply the sesame white 15 of other size 15 thikness according to customers' specific requirements;4)the sesame white 15 to be used by indoor 15 outdoor,such as the wall,floor,China Granite Tiles Marble Slab Granite Countertop Stone Fireplacetop,15.5)the white 15 used by large area which will be have good effect.