Antique Blue John Sterling Silver Necklace Pendant Art Deco Cabochon Oval 1920s Bleu Jaune Womens Mens Rare Gemstone Jewelry Jewellery art deco earrings The brooch has solid back

The brooch has solid back and isn't hallmarked which is a good sign of age

DESCRIPTION: A petite vintage solid 18ct 750 gold diamond pendant

5" and weighs approx

it's stubborn to clean off

It was taken from a solid silver Victorian charm bracelet

Antique Blue John Sterling Silver Necklace Pendant Art Deco Cabochon Oval 1920s Bleu Jaune Womens Mens Rare Gemstone Jewelry Jewellery art deco earrings The brooch has solid backDESCRIPTION: A petite antique art deco (c1920s) solid silver and genuine blue john mineral necklace pendant. The pendant is stamped "SILVER" on the rear. It weighs approx. 2. 47g and the size dimensions are in the later photos. Blue john is an extremely rare mineral and can only be found in Derbyshire in the UK (not far from me), it is in fact Britain's rarest mineral. The surface of the blue john has some natural fissures in it.