DESCRIPTION: A vintage sterling silver and genuine blue john doublet necklace pendant. The pendant is stamped "SILVER", weighs 1.29g and 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's in fact Britain's rarest mineral. PLEASE NOTE: The blue john doublet has fogged underneath, see pictures/video. I've reduced the price accordingly.
