DESCRIPTION: A lovely genuine vintage 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, it is in fact Britain's rarest mineral. The ring sizes at approx. UK K or US 5.25 and weighs approx. 3.15g. It's hallmarked for sterling silver, dating to 1979. PLEASE NOTE: The blue john has been glued into place on the rear, see pictures/video.
