Sterling Silver Blue John Round Celtic Dropper Earrings. E975. An elegant pair of earrings featuring hand carved cabochons of Blue John gemstones, which have been sourced directly from the Derbyshire Blue John Cavern in Castleton. The Blue John is framed by a unique Celtic design of sterling silver. The earrings are completed by post and butterfly fittings for secure and easy wear. All our Blue John jewellery is designed and crafted within our very own workshops in Ashbourne, Derbyshire where a team of skilled craftsmen transform the natural Blue John stone into these stylish pieces of jewellery. You can find other matching Blue John jewellery and other Blue John necklaces on our website. Dimensions: 27 x 8mm, Blue John 7 x 7mm.