Lovely 9mm round Blue John stones set in hallmarked sterling silver stud earrings. Made in our Sheffield studio by jewellery designer Andrew Thomson. A matching pendant is also available.
Please note that these are natural stones so they may vary in pattern and colour from the pictures shown.
Now a little bit about the stones…
Blue John (also known as Derbyshire Spar) 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. During the 19th century, it was mined for its ornamental value, and mining continues on a small scale.