A Colombian emerald and diamond necklace, the octagonal-cut emerald, weighing approximately 15 carats, in a four claw setting within a cluster surround of marquise-cut diamonds, the detachable pendant suspended from a diamond collar necklace set with two rows of brilliant-cut diamonds, to a back chain of round polished links, stamped ‘750’ and ‘18k’, maker’s mark, total diamond weight approximately 12.00 carats, pendant length 35mm, necklace length 43cm. £12,000-£15,000

Accompanied by a report from GCS stating that the emerald is of Colombian origin with indications of moderate to significant amount of oil in fissures. Report number 5782-318, dated 18 January 2022.