Blue john marquise long drop 9ct yellow gold earrings e131rthese elegant drop earrings boast two stunning marquise style pieces of rare blue john stone that has been sourced directly from treak cliff cavern in castleton the tear drop shaped stone is set on the end of the exquisite 9ct yellow gold mount which hangs gracefully from the lobe by the classic butterfly fasteningsrall our blue john jewellery is designed and crafted within our very own workshops in ashbourne derbyshire where a team