Blue Marble Tile Size:12"x12",18"x18",etc Surface:Polished,tumbled professional in fabricating,good price,quality ... "x16"x1/2"(400x400x12mm),16"x16"x3/8"(400x400x10mm), 18"X18"X3/8"Slab60up*120up*2cm/3cm,.60up*180up*2cm/3cm ... main market for countertops and vanity tops is USA, UK, Singapore, Germany, Middle East over 70countries etc. Grey sandstone