These Glass tiles give a luminescent quality to any bathroom, kitchen or pool installation. Sold in sheets of 12 " x 12" mesh backed sheets. • Centers: N/A • Length: 1/2" • Width: 1/2" • Diameter: N/A • Projection: 8mm" • Finish Shown: 1/2" x 1/2" wood onyx mixed with 1/2" x 1/2" metallic copper, butterscotch, and cream polished glass in a clean finish, and chocolate polished glass in a wavy finish. Translucent glass and the color is painted on the back of the tile so it will not scratch or chip the color off.