Whitby Jet Bracelet Oblong Marcasite Silver. B878. This simple but stunning bracelet boasts a delicate oblong shaped piece of fine Whitby Jet stone that has been sourced directly from the north east coast of Yorkshire. The Whtiby Jet stone is set on a delicate sterling silver square linked chain that is embellished with exquisite marcasite stone for a sparkly finish. 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 bracelets on our website. Sterling Silver and Whitby Jet