Sterling Silver Whitby Jet Union Jack Ring. R903. This patriotic unisex ring, part of our Eclipse collection, features Whitby Jet stone that has been sourced directly from the north east coast of Yorkshire. The stone is set within a sterling silver Union Jack flag design.  All our Whitby Jet jewellery is designed and crafted within our very own workshops in Derbyshire where a team of skilled craftsmen transform the natural Jet into these stunning pieces of jewellery. You can find other matching Whitby Jet jewellery and other Whitby Jet necklaces on our website.