Silver Blue John Marcasite Wave Bail Pear Shaped Necklace. P2123. This unique necklace boasts a stunning pear shaped cabochon of the finest Blue John stone. The stone is set within an exquisite sterling silver pendant that is embellished by dazzling marcasite, giving the piece a magical sparkle. The reverse of the pendant has scrolled silver detailing. The pendant hangs gracefully from a fluid 18 inch silver chain complete with a classic bolt ring clasp for easy wear. 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 into these stunning pieces of jewellery. You can find other matching Blue John jewellery and other Blue John necklaces on our website. Silver Blue John Marcasite Wave Bail Pear Shaped Necklace.