8 juin 2020
Black "Nobby" Opal with Multi-color Fire, Kelly's Field, Lightning Ridge, New South Wales, Australia
Lot 58. 20.88 carats Black "Nobby" Opal with Multi-color Fire, Kelly's Field, Lightning Ridge, New South Wales, Australia. Estimate US$ 60,000 - 80,000 (€ 53,000 - 71,000). © Bonhams With its inky, midnight black base color, this fine nodule opal displays...