This beautiful Australian white opal from Coober Pedy set in Argentium Silver has a rare ribbon pattern with bright red, green, yellow, purple, and blue play of color. 
Round, Low Dome
Bodytone: N9
Brightness: B3.5
20.1x18.2x4.4mm
Colors: red, green, blue, pink, yellow, orange
Metal: Argentium Silver 
Comes with box or bolo sterling silver chain of your desired length.