Sterling Silver Whitby Jet Owl Ring. R855. This unique sterling silver ring features an owl design with the finest Whitby Jet sourced directly from the North East coast of Yorkshire. Perfect for all owl lovers! This ring is adjustable and will fit most finger sizes. 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. All articles purchased from C W Sellors are lovingly and securely dispatched with our elegant jewellery packaging. Dimensions: 17mm x 18mm, Whitby Jet: 6mm x 6mm.