An early 20th century platinum and gold, Colombian emerald, emerald and diamond brooch. Of openwork design, the Colombian emerald cabochon and old-cut diamond flower and foliate sides, with calibre-cut emerald border encircled by a single-cut diamond ribbon and old-cut diamond surround. Gems deficient. Verbal from GCS on principal emerald stating Colombia, moderate enhancement. Estimated total diamond weight 2cts. Length 5.7cms. Weight 18.6gms.