OPAL AND DIAMOND BROOCH, CIRCA 1915 Opal cabochon Old brilliant and single-cut diamonds Length 7.1cm Weight approx. 6.5g Footnotes: OVERALL CONDITION Light surface wear to unhallmarked white metal stamped 18ct and PT. OPAL Gauged in mount as approx. 18.5 x 14.1 x 5.0mm, of orange, blue, green and pink play-of-colour with some dark colour zoning visible. DIAMONDS Bright and lively. This condition report is provided for your convenience, based on the opinion of our gemmologists. Bonhams is not responsible for any discrepancies between this information and other opinions. All lots in this sale are sold as viewed online and additional images/videos are not available. For further information on this lot please visit Bonhams.com For further information about this lot please visit the lot listing