Whitby Jet Plain Ribbed Silver Ring. R113. This feminine ring features a striking oval shaped cabochon of the finest Whitby Jet stone that has been sourced directly from the north east coast of Yorkshire. The stone is placed within an exquisite sterling silver setting and band with open detailing on the shoulders. 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 Plain Ribbed Ring. 13x17mm.