Art Deco Blue John Button Earrings castellani and show great colour and

and show great colour and illumination as the light reflects off the foil and back through them

enamel is pristine

Inner circumference: 6

and I have no idea what its intended purpose was

Art Deco Blue John Button Earrings castellani and show great colour andDATE: Art Deco, c. 1920 A charming pair of antique blue john earrings dating from the Art Deco period, circa 1920. They feature silver "clip on" backs and a single domed cabochon of rich purple with a white band running through it. STONES Blue john cabochon (fluorite) MEASUREMENTS 18mm (diameter) WEIGHT 7. 6g (pair) MARKS No marks present, tests as silver CONDITION Good, one stone has a chipped back. Not really noticeable when worn