Morjo™ Metallic Glass Mosaic Tiles 3/4 inch (20mm) are beautifully pigmented glass tiles with sparkling copper streaks and swirls. Some, such as Deep Blue and Purple, also include stunning color streaks. Opacity varies from transparent to completely opaque. Powdered copper infused within the glass gives these tiles their permanent, UV-resistant sparkle. Each 1/2-lb bag contains about 75 tiles. Click on a color to see the full product description.