Vintage Sterling Silver Blue John Brooch Large Whole Gemstone Big Fluorite Bleu Jaune Womens Rare Gemstone Jewelry Jewellery Retro navette ring turquoise glass and a freshwater

turquoise glass and a freshwater pearl

adorned with a large genuine citrine (100% tested)

DESCRIPTION: A highly unusual and rare antique Mid Victorian shell cameo brooch

48g and is stamped "9ct"

the item has some marks on it

Vintage Sterling Silver Blue John Brooch Large Whole Gemstone Big Fluorite Bleu Jaune Womens Rare Gemstone Jewelry Jewellery Retro navette ring turquoise glass and a freshwaterDESCRIPTION: A genuine vintage sterling silver blue john brooch. The gemstone is not a doublet or triplet, it's a whole piece of blue john. The item weighs approx. 6. 05g and the size dimensions are in the later photos. It's hallmarked for sterling silver, dating to 1987. 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.