Blue John Specimen from Derbyshire This is a superb example of Blue John Fluorite from Derbyshire, from old stock. The piece shows the classic blue-purple and yellow from which Blue John derives its name. The piece has several well defined dark purple Fluorite crystals. The piece weighs 85g and measures approx 43 x 42 x 42mm, and is best viewed under magnification to see the full detail (All weights and measures are approximate) It is a beautiful piece which would appeal equally to collectors or to display in the home Please take a look at my shop and save me as a seller – I will be listing many more items in the coming weeks which may be of interest to you If you have any questions regarding the item then please do not hesitate to message me Many thanks for looking