Vitreous Glass Tiles-gold grain 38" (10 mm) Vitreous Glass tiles are made in the Old Italian glass making tradition. These are manufactured glass tiles to a uniform shape and size, made by molten glass being poured into trays and fired in kilns under high temperature to create rich and consistent colour. They are waterproof, resilient and durable, so they can be used indoors and outdoors. The top is smooth and make a perfect right angle, the bottom is rough and edges are beveled for strong adhesion to glues and grout. They are easy to cut in any shape and can adhere to any reasonably smooth surface. Tiles are available in 38” or 34" squares (18” thick). 1 lb. of 38” tiles has about 700 titles & cover about 125 sq. inches.