Silver Whitby Jet Marcasite Pointed Cross Necklace. P2124. This elegant, classic cross features a petite round cabochon of fine Whitby Jet stone that has been sourced directly from the north east coast of Yorkshire. The stone is set at the heart of this vintage style sterling silver cross which has been embellished with glistening marcasite for an eye catching finish. The pendant sits on a fluid 18 inch long sterling silver chain and is completed by a classic bolt ring clasp. All our Whitby Jet jewellery is designed and crafted within our very own workshops in Derbyshire where a team of skilled craftsmen turn the raw Jet into these stunning pieces of jewellery. You can find other matching Whitby Jet jewellery and other Whitby Jet necklaces on our website. Silver Whitby Jet Marcasite Pointed Cross Necklace. Pendant 40x21mm including bale.