Vintage Sterling Silver Blue John Necklace Pendant Small Hallmarked Cabochon Charm Border Bleu Jaune Womens Mens Rare Gemstone Retro Jewelry silver georg It's hallmarked for 15ct gold

It's hallmarked for 15ct gold

showing the yellow gold underneath

The metal on the earrings is base metal which is typical of earrings of this type and era

it isn't stamped but tests for solid 9ct 375 gold

It has the picture retaining shims on both sides and closes tightly

Vintage Sterling Silver Blue John Necklace Pendant Small Hallmarked Cabochon Charm Border Bleu Jaune Womens Mens Rare Gemstone Retro Jewelry silver georg It's hallmarked for 15ct goldDESCRIPTION: A petite vintage sterling silver and genuine blue john mineral necklace pendant charm. The pendant is fully hallmarked for sterling silver, dating to 1994. It weighs 2. 78g and is small in size, 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.