GOLD OPAL AND RUBY FIGURAL FISH BROOCH: 10K yellow gold fish brooch contains one oval cabochon crystal opal, approx. 6.00 Ct., with blue-green play-of-color. The eye is an approx. .20 Ct. round cabochon ruby. Both stones are bezel set. Bar pin clasp. Length: 2.25''. Weight: 11.9 grams.