White Opal is much more common than the black one, which doesn't mean it can't be beautiful. Before Europeans ever reached Australian shores white opals were already known and mined in Hungary. The consensus at that time was that opal can only have white to transparent base. Today most of white opals come from the Coober Pedy area of Australia but other localities can bear them as well. Virtually every Australian source, Lightning Ridge included and also Brazilian and Ethiopian mines yield white opals with lower range being most commonly used in mass produced, high street grade jewellery.