9ct Yellow Gold Whitby Jet Medium Rhombus Ring. R607. This medium rhombus Whitby Jet 9ct yellow gold ring has been cut and handcrafted by our skilled jewellery craftsmen, to reveal the natural beauty of the Whitby Jet gemstone in a fashionable and stylish design. A beautifully simple and classic ring, perfect for any occasion. All our Whitby Jet jewellery is designed and crafted within our very own workshops in Ashbourne, Derbyshire where a team of skilled craftsmen transform the natural Whitby Jet stone into these stunning pieces of jewellery. You can find other matching Whitby Jet jewellery and other Whitby Jet rings on our website. All articles purchased from C W Sellors are lovingly and securely dispatched with our elegant jewellery packaging. Dimensions: Whitby Jet; 21mm x 21mm.