Murano glass bead: 14mm square made with transparent colors over white gold foil with a 1mm hole. Available also in 20mm square and 11-12mm square. White gold is an alloy of actual gold and at least one white metal, usually nickel, manganese or palladium. White gold renders a more muted color than either sterling silver or yellow gold. In this bead it is used with Topaz Murano Glass which is a medium topaz glass.