Ethereal Prism - Halo Diamond Australian Black Opal Engagement Ring 18K Yellow Gold. Design name: Ethereal Prism Design Idea: The Ethereal Prism ring is named for its magical play of colors, like light passing through a prism. At its heart is a striking Australian Black Opal, surrounded by 28 dazzling diamonds in a geometric halo, all set in luxurious 18k yellow gold. 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 Black Opal, 0.34 ct Opal Boday Tone: N2 Opal Brightness: B5 Vivid - B4 Bright Opal Size: 6 x 3 mm 28 Round Diamonds: 0.07 ct Ring Size: 7 Opal Color: Reflects Bright Green, Blue & Yellow Colors. Occasion: Engagement/Anniversary ----------------------------------------------------------------------------------------------