18ct Rose Gold Whitby Jet Diamond Wavy Heart Necklace. P3067. This beautiful pendant features a gorgeous wave design that has been hand crafted in the finest Whitby Jet, set inside a solid 18ct Rose Gold heart. Fourteen sparkling diamonds totalling 0.50 carats add stunning detail to the design. The reverse of the pendant features highly polished Whitby Jet. The pendant is sold complete with a fluid 18 inch Rose Gold chain. The perfect gift for any occasion! 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. 18ct Rose Gold Whitby Jet Diamond Wavy Heart Necklace. Dimensions: 21mm x 26mm plus 7mm bail.