Sterling silver blue john marcasite swirl cross necklace p2132 this pointed cross pendant features a centralhand carved round blue johngemstone sourced directly from treak cliff cavern in castleton set on the sterling silver cross with a decorative swirl detail and accented with sparkling marcasite gemstones the pendant hangs gracefully from afluid 18 inch longsterling silver chain complete with a classic bolt ring clasp for easy wear all our blue john jewellery is designed and crafte