Sterling Silver Whitby Jet and Marcasite Wavy Cross Necklace. P1309. This sterling silver Whitby Jet and Marcasite necklace is hand crafted within our workshops by our highly skilled jewellers using locally sourced Whitby Jet, smoothed and rounded at the edge for a comfortable wear. Perfectly finished with a unique look and added sparkle from the Marcasite gemstones. Supplied complete with an 18 inch sterling silver chain.  All our Whitby Jet jewellery is designed and crafted within our very own workshops in Ashbourne, Derbyshire where a team of skilled craftsmen transform the natural Whitby Jet stone into these stunning pieces of jewellery. You can find other matching Whitby Jet jewellery on our website. All articles purchased from C W Sellors are lovingly and securely dispatched with our elegant jewellery packaging. Dimensions: 31mm x 20mm.