Silver blue john marcasite pear drop rhombus link necklacen894 this stunning statement piecefeatures a large teardropshaped hand carved blue john gemstone set in sterling silver accented by sparkling marcasite gemstones a very eye catching necklacewith a vintage feel this piece uses only the finest blue john gemstone all our blue john jewellery is designed and crafted within our very own workshops in ashbourne derbyshire where a team of skilled craftsmen turn the raw blue john stone in