Silver Blue John Oblong Drop Earrings. E226. These simple and sophisticated earrings are part of our Heritage handmade jewellery collection and boast two stunning oblong pieces of rare Blue John stones that have been sourced directly from Treak Cliff Cavern in Castleton. The stones are framed within classic Sterling Silver settings. The drops are completed by post and butterfly fastenings for 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 turn the raw Blue John stone into these stunning pieces of jewellery. You can find other matching Blue John jewellery and other Blue John rings online and instore. Silver Blue John Oblong Drop Earrings, dimensions 11 x 4mm stones.