Antique Victorian Blue John Sterling Silver Ring Large Signet Cabochon Bleu Jaune Vintage 1920s Womens Rare Gemstone Jewelry Jewellery sterling ring with fairly thick rounded box

with fairly thick rounded box style links

It's stamped "800" for silver and also tests for silver

pleasure measure them before purchasing)

with oval and square links

Antique Victorian Blue John Sterling Silver Ring Large Signet Cabochon Bleu Jaune Vintage 1920s Womens Rare Gemstone Jewelry Jewellery sterling ring with fairly thick rounded boxDESCRIPTION: A rare antique art deco sterling silver and genuine blue john gemstone ring. 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 ring sizes at approx. UK O or US 7 and it weighs approx. 3. 15g. The ring is stamped "SIL" for silver. The stone has some rubbing and light pitting on the face, see pictures video.