SYDNEY - An Australian museum said Monday it would exhibit what it believes is the best opal stone ever found - a 6.0-centimetre (2.4 inch) multi-coloured gem unearthed in the Outback named the Virgin Rainbow.
The South Australian Museum said the stone, valued at more than Aus$1.0 million, would go on public display for the first time in September to mark the centenary of opal mining in the country.
"It's of unequalled quality, it's a fully crystal opal," museum director Brian Oldman told AFP.
