Opal comes in many different shades, but this particular nose ring features a pretty light green one. Due to the natural texture of the stone, each one will vary in colour but most appear very light green mixed with a hint of blue. The opal is 2mm whilst the actual nose ring is 10mm wide, with a 24ga gauge which refers to the thickness of the wire. The coil closure keeps it securely in place and weighing just 0.1g, its not only comfortable to wear but super lightweight as well.