Nina Runsdorf bracelet in 18K yellow gold with 151.07 carats fire opal and 2.33 carats diamond, price on request, ninarunsdorf.com Sanjay Kasliwal features organic-shaped blue opals in these swoon ...

The world's finest uncut opal, the Fire of Australia, has become part of the South Australian Museum's collection more than 60 years after it was discovered. The 998-gram opal valued at nearly $ ...