Australian Opal and Designer Jewelry in Jewelry Stores from IOpal Each and every piece of jewelry by iOpal.com.au is individual, and materials are intentionally chosen to display the complete elegance and beauty of every opal. iOpal.com.au caters to the discerning client who values striking, rarity and excellence gemstone jewelry. Working with each customer, iOpal's world-class design team develops a unique jewelry design that shows the client's personal style.