Watches & Jewellery
Halley's Comet black opal to make $650,000 at Bonhams?
Halley's Comet, a major black opal, will auction in Los Angeles on December 10
$134,500 Black Prince opal tops Bonhams' World of Opals sale
The Black Prince led the LA opal sale, which included Margie and Robert Petersen's gold nugget