9ct Yellow Gold Whitby Jet Carved Shoulder Oval Signet Ring. R101. This classic signet-style ring is set with a hand carved oval Whitby Jet gemstone, which is inlaid into a thick band of solid 9ct yellow gold. The signet ring features ornate carving on each shoulder giving fine detail and depth to the design. The  All our Whitby Jet jewellery is designed and crafted within our very own workshops in Ashbourne, Derbyshire where a team of skilled craftsmen transform natural pieces of Whitby Jet 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: Whitby Jet; 14mm x 10mm.