Earth Moon Design Australian Doublet Opal & Diamond 18K White 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 Solid 18k White Gold Natural Australian Doublet Opal, 0.82 ct Diamond: 0.05 ct Metal Color: Golden Opal Color: Blue, Green Pendant Size: 13 x 12 mm (include hook/bail) Chain: Free 18-inch Silver Chain or 18K Solid Gold Chain for an extra cost.