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A Lady's Edwardian 18ct Burmese Royal Blue Natural Non Heat Treated Sapphire and Diamond Ring

英国

2016年04月28日开拍 / 2016年04月28日截止委托

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拍品描述: A Lady's Edwardian 18ct Burmese Royal Blue Natural Non Heat Treated Sapphire and Diamond Ring, the piece in the Style of the Royal Engagement Ring, set with a Sapphire of 5.40 cts. The stone measuring 11.99 x 8.30 x 6.21 mm and surrounded by approx 72 pts of Old Cut Diamonds, makers mark NBC size K, approx 4.2 gms.Note: The ring accompanied with three Certificates:1.???? GCS Gem Stone Report certificate nr 5775/2008 dated 15/05/2015 stating the origin of the sapphire to be Burma (Myanmar) non heat treated.2.???? Certificate from SSEF nr 81836 dated 8/09/2015 giving the origin as Ceylon, non-heat treated.3.???? Current Gem Stone Report from GCS, nr 5776/5187 dated 07/04/2016 confirming the origin of the sapphire to be Burma (Myanmar) non heat treated; together with a corresponding letter stating that after further analysis by "using the EDXRF spectrometer and by comparison with our sapphire database, we found that the overall chemical composition was more consistent with a Burmese sapphire. All those results are consistent with the previous analysis."
---以下为第三方软件翻译，仅供参考---