An emerald and diamond set necklace collet set with a cabochon emerald within an old-cut diamond cluster, the neck chain formed of curb links, with accompanying report by Gemmological Certification Services, dated 31 July 2019, numbered 79226-39, stating that the emerald is of Columbian origin with moderate clarity enhancement (Dimensions: Length: 42cm; estimated emerald weight: 4.68cts) (Length: 42cm; estimated emerald weight: 4.68cts) Footnote: Property from a Private European Collection Condition report: The emerald measuring approximately 9.65 x 8.2 x 7.9 mm. Apparently unmarked. Gross weight 117.5 gr. Please note that diamonds and gemstones can not be accurately graded and measured when mounted in jewellery.