GT8M4896K5 Mixed Size Twilight Collection Glass Tile Blends Black 8mm Thickness 12" x 12" Sheet. Elevate the style of your swimming pool with glass tile blends. Glass tile blends add a beautiful look around any pool or spa, and their reflective surfaces highlight your pool's sparkling water. Indulge yourself in the uncommon brilliance of glass tile and enjoy the frost-proof quality that will last a lifetime.