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Derbyshire Blue John

***THIS IS ONLY A SMALL SELECTION OF THE DERBYSHIRE BLUE JOHN WHICH WE STOCK AT JUDITH HART JEWELLERS*** Derbyshire Blue John is a semi-precious mineral, a form of fluorite with bands of a purple-blue or yellowish colour. In the UK it is found only at Blue John Cavern and Treak Cliff Cavern at Castleton in Derbyshire. Judith Hart Jewellers are the only stockists of this stunning jewellery in Derby. *Please note - not all items of Blue John will look the same colour as they do in images*

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