Beautiful vintage 10k yellow, rose and green gold genuine opal ring, circa 1940s! This fabulous ring showcases a genuine opal center which displays a vibrant play-of-color, flashing orange, green, yellow, and violet hues. The oval cabochon gem weighs an estimated .76 carats and is secured by four prongs. The setting has one rose gold leaf on one side and a green gold leaf on the other side. Lovely tri gold retro ring, featuring October's birthstone! ERA - 1940's- Retro METAL / MATERIAL - 10k…