The tiles have an opaque finishing. It gives an effect of a smooth and solid surface. The opaque tiles allow a small amount of light to shine through depending on the colour density.

They are approximately 2mm (1/16 inch) in thickness. There are a variety of sizes to choose from 5x5mm (3/16 inch), 10x10 mm (3/8 inch), 15x15mm (5/8 inch) and 20x20mm (13/16 inch).