Basalt Gray 4 in. x 16 in. Honed Basalt Wall and Floor Tile 8 sq. ft.Case Add the beauty of natural stone to your kitchen Add the beauty of natural stone to your kitchen or bathroom renovation with our 4 x 16 Basalt Field Tile. This dark grey natural basalt stone features slight tones of blue with a honed finish and adds a modern element to design with the durability of natural stone.