Retro 18ct Gold & Opal Stud Earrings

A useful pair of 18ct75% pure gold (or 750 parts pure gold and 250 parts other metals) gold and opalOpals occur in a range of body colours from white, black or grey, bright orangey red and a pale watery colour. The most precious opals show strong colour contrast and generally have a dark body colour with a vivid array of colour play. earrings. The opals are colourful and display a lot of blue and green with red flashes. The posts are partly a screw fitting so they are really secure on the ear. They were made circa 1940.