Sterling silver blue john curved barrel three stone stud earrings e803 these stunning earrings featuregeometric shaped blue john stones framed bysterling silver to create this elegant curve design the blue john stone has been sourced directly from treak cliff cavern in castleton before being polished to perfection and set into these feminineearrings they are completed by classic butterfly fastenings for easy wear all our blue john jewellery is designed and crafted within our very own works