Antique Edwardian Cairngorm Bar Pin with citrine glass

A classic pre-Art Deco antique Edwardian Cairngorm bar pin, circa 1900, made out of gold filled metal (not hallmarked and not tested, possibly low gold content) features a beautiful faceted citrine glass, the pin closes on C-clasp, overall in good wearable condition with some normal aging signs, as seen in the photos, comes from a non-smoking environment. Measurements: 6.5 x 1 cm