Cross Pendant Australian Doublet Opal Necklace 14K 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 14K Solid Yellow Gold Australian Doublet Opal, 2.52 ct Pendant Size: 25 x 15 mm Opal Color: Blue Colors Occasion: Engagement/Anniversary/Birthday Chain: Free 18 inches Silver Chain or 18K Solid Yellow Gold Chain for Extra.