Silver blue john marcasite oval lace edge necklace p2122 this elegant necklace features a highly polishedoval shaped cabochon of rare blue john stone that has been sourced directly from treak cliff cavern in castleton the stone is set within the centre of an intricately crafted sterling silver pendant embellished by lace detailing and marcasite stones giving the piece a sparkly and sophisticated finish the pendant hangs gracefully from a fluid 18 inch longsterling silver chain completed