Cloudy with a chance of rainbow: iridescent clouds brighten the sky over parts of Victoria

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Rainbow clouds are not uncommon in Australia but rarely photographed, and experts say they get their colours when light is diffracted around ice crystalsFollow our Australia news live blog for latest updatesGet our breaking news email, free app or daily news podcastRainbow clouds shone over parts of Victoria over the weekend, in an unusual visual phenomenon known as iridescent clouds.Photographs of the spectacle were taken by onlookers in the Melbourne suburbs of Mount Waverley and Caroline Spri