This is a stunning version of my opal earrings with gemstone clusters. I set a high dome ethiopian opal in 22k solid gold on a base of sterling silver that I've oxidized to near black. At the base of the stone is a cluster of faceted tanzanite on 18k gold headpins. These earrings measure about 7/8 of an inch long. The opal itself measures 12mm x 9mm.