One carat Lightning Ridge crystal opal, oval cabochon, with bright abundant flashes of green and blue play of colour and custom made in 18 carat yellow gold. The opal was mined in the Allwah Field in Lightning Ridge, New South Wales. Ring is from the opal cutter's own collection. Size: N

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BID WITH CONFIDENCE: All goods have been thoroughly assessed by valuers with registered the National Council of Jewellery Valuers (NCJV) and Gemmological Association of Australia (GAA)