Australian Black Opal Surrounded by Crystal Opals Diamonds 18k Gold Engagement Ring. Free Domestic USPS First Class Shipping! Free Gift Bag or Box with every order! Opal—the queen of gemstones, is one of the most beautiful gemstones in the world. Every piece of opal is unique in its own ways and patterns. We only use high-quality Natural Opals (NO synthetics or imitations) for our jewelry. ---------------------------------------------------------------------------------------------------- ABOUT THIS PRODUCT 18K Yellow Gold Australian Dark Opal, 0.72 ct Australian Crystal Opal: 0.352 ct 6 White Diamonds: 0.068 ct Opal Body Tone: N5 Opal Brightness: B4-B3 Ring Size: 7 Opal Color: Reflects Red, Yellow, and Blue Colors. Occasion: Engagement/Anniversary ----------------------------------------------------------------------------------------------------