18ct White Gold Blue John 0.15 Carat Diamond Cluster Drop Earrings. E2251. These elegant drop earrings feature two highly polished teardrops of rare Blue John stone, sourced from Treak Cliff Cavern in Castleton. The stones are embellished with 20 sparkling diamonds, totalling 0.15 carats, set in clusters into 18 carat white gold. They are suspended from 18ct white gold hooks for easy and secure wear. All of 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. The earrings are stunning alone or when paired with one of the matching Blue John bracelets or Blue John Necklaces on our website. Thanks to the surrounding diamonds, the earrings also look beautiful with diamond jewellery.