"Emerald" Diamond brooch (gold, silver) with a square of dark green Colombian emerald (II quarter of XIX) of the Diamond Fund of Russian Federation. Colombian emerald cut with steps (XVI or XVII), weighing 136.25 carats, measuring 4.5 cm x 3.6 cm - one of the seven historic stones of the Diamond Fund of Russia.
AN EMERALD AND DIAMOND BROOCH Of sunburst design, set with marquise-shaped and brilliant-cut diamonds, centering upon a cut-cornered square-cut emerald, 4.4 cm, with French assay marks for platinum and gold
The Lothian Emeralds ~ Every generation of the family of the Marquis of Lothian has believed that the majority of these emeralds were given by the Empress Catherine II to their ancestor, the Earl of Buckinghamshire, during his embassy to St. Petersburg 1762-1765. He was handsome, the Empress was particularly susceptible to good looking men. He gave the necklace to his daughter who died childless and passed it to her sister's son, the Marquis of Lothian. It is still kept with this family