DESCRIPTION: 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.
