Silver Whitby Jet Domed Oval Ring. R719. This stunning statement ring boasts a striking oval shaped cabochon of rare Whitby Jet stone that has been sourced directly from the north east coast of Yorkshire. The stone is set within contemporary sterling silver and completed by a classic silver 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 necklaces on our website. Silver Whitby Jet Domed Oval Ring. Whitby Jet stone 21x8mm.