Add a touch of Australian wildlife to your collection with this vintage Costellos brooch. Crafted from mixed materials with gold-tone metal and featuring an oval-shaped blue opal in a channel-set design, this 2.5″ koala bear pin is a unique piece of fashion jewelry. The vibrant colors and intricate details make it a statement piece that is perfect for any occasion. The brooch is from the Opal Discovery Centre in Australia and is a must-have for any collector. It is in excellent condition and comes with tags. This piece is sure to impress and is a great addition to any jewelry collection.