18ct White Gold Whitby Jet 0.16 Carat Diamond Tapered Shoulder Ring. R1028. This elegant 18ct white gold ring features a stunning round shaped hand carved Whitby Jet stone that has been sourced directly from the North East coast of Yorkshire. The ring is set with 16 brilliant cut Diamonds totalling 0.16 carats, which are pave set along each twisted shank that taper to an elegant point. A beautiful ring featuring a rare British gemstone, it would make a gorgeous engagement ring or a beautiful gift for someone special. 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 Whitby Jet into these stunning pieces of jewellery. You can find other matching Whitby Jet jewellery and other Whitby Jet rings on our website. 18ct White Gold Whitby Jet 0.16 Carat Diamond Tapered Shoulder Ring. Whitby Jet stone; 5x5mm.