We have had this beautiful Australian Opal hand set for us by our friends at Red Cloud Design. We chose to oxidise the sterling silver setting to bring out the intense colours of the opal. Opal is the nation gemstone of Australia. We produce 97% of the world's supply, with much of it coming from Coober Pedy or Lightning Ridge. Opal is the birthstone for October and is considered to be a very lucky gemstone. This opal measures 17mm x 13mm. We have presented it on a 45cm oxidised Italian sterling silver fine curb chain.