Platinum Whitby Jet 0.14ct Diamond Stargazer Disc Ring R537 This elegant ring from our Stargazer collection, features a stunning 20mm diameter highly polished disc of the finest Whitby Jet stone that has been sourced directly from the north east coast of Yorkshire. The stone is held in place by exquisite 0.14 carat brilliant cut Diamond encrusted platinum V shaped claws and has a simple platinum band. 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. Platinum Whitby Jet 0.14 Carat Diamond Stargazer Disc Ring. Jet 20mm diameter. 0.14 carat diamonds.