9ct Yellow Gold Blue John Toscana Marquise Stud Earrings. E1124. These stylish earrings are part of our Toscana collection and feature marquise shaped cabochons of rare Blue John stone which has been sourced directly from Treak Cliff Cavern in Castleton, Derbyshire. The beautiful stones are framed within 9ct yellow gold. The earrings are completed by classic post and butterfly fastenings. 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 earrings on our website. Dimensions: 20mm x 8mm