3/4" mosaic glass tile, smooth faced with grooves on the back Suitable for beginners as well as glass tile professionals, artists and crafters 1/2 lb bag covers around 1/3 of a SF Mosaic glass tiles approx. 3/4-inch by 3/4-inch by 1/8" thick Smooth front with textured back for better adhesive to setting material, waterproof, indoor/outdoor use. For both beginner and professional mosaic designs, art & craft projects