Opal Butterfly SignetA show stopper Coober Pedy Opal is one of the most beautiful I've ever seen. A pool of coral, gold, hot pink, lime green, blue, turquoise, and purple. Solid sterling silver signet is hand engraved to highlight the stone and add extra sparkle to every angle. The 14k gold filled butterflies are texture to give the iridescent effect of butterfly wings and framed in engraved beads. Size 8, fits like a 7. 5.