DESCRIPTION: A lovely vintage solid 9ct gold genuine blue john doublet ring. Blue john is an extremely rare mineral and can only be found in Derbyshire in the UK, it's in fact Britain's rarest mineral. The ring sizes at approx. UK P.5 or US 7.75 and weighs approx. 1.30g. It's fully hallmarked for 9ct gold and is a fairly slim, lightweight piece. It has been resized at some point in its life, see pictures.
