OPAL AND DIAMOND CLUSTER BROOCH Opal cabochon Single-cut diamonds, approx. 0.35ct total Length 4.2cm Weight approx. 7.5g Footnotes: OVERALL CONDITION Some surface wear to the unhallmarked metal, testing as platinum, brooch fitting testing as 17kt gold. OPAL Measuring approx. 29.0 x 11.2 x 7.1mm, gauged in mount. Displaying green, blue and orange play-of-colour, with crazing, a small chip, and fracture spanning the length of the stone. Brown matrix to reverse, visible to front of cabochon at base of millegrain collet setting in small area. 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. For further information on this lot please visit Bonhams.com For further information about this lot please visit the lot listing