Australian type black opal and diamond brooch. The oval caba...

Australian type black opal and diamond brooch. The oval cabachon opal with strong play of colour in green and blue set into yellow metal claws Approximately 21mm x 17mm x 3.01mm (5.60-6.00 carat) surrounded by round brilliant cut diamonds (approximately 0.01 carat each) on 18ct white gold, hallmarked 750, London, WJ, closing on a locking ball clasp, overall length 2.8cm, gross weight 6.2 grams

Estimate:£2,000

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