Silver Whitby Jet Marquise Ring. R404. This simple and stylish ring boasts a marquise shaped piece of the finest Whitby Jet stone that has been sourced directly from the north east coast of Yorkshire. The stone is set within the centre of a classic sterling silver setting and band. 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 rings on our website. Silver Whitby Jet Marquise Ring