"Hammered bronze creates a shimmering border for an organically shaped genuine African opal, reflecting the best of nature and a stylish artisan look. African opal, also known as ""milky opal"", is a natural stone with natural imperfections, so no two are exactly alike. Opal Ring: Metal: Bronze Metal Color: Yellow Stones: 14.5 ctw. genuine African opal, 27x20mm Dimensions: 24x31mm Sizes: 6-10, whole Due to the nature of large genuine African opals, variations in color and shading may occur; ctw. is approximate. "