18ct Yellow Gold Whitby Jet Medium Oval Signet Ring. R189. This classic signet style ring features a stunning hand carved Whitby Jet stone, sourced directly from the North East coast of Yorkshire. The gemstone is set within a solid band of 18ct yellow gold. The finished piece is smooth and highly polished.  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 Whitby Jet into these stunning pieces of jewellery. You can find other matching Whitby Jet jewellery on our website and in our stores. This item will arrive lovingly and securely dispatched in our elegant jewellery packaging.  Dimensions: Whitby Jet: 10mm x 12mm, Width of Band; 3mm