Silver Whitby Jet Half Filled Heart Necklace. P2540. This beautiful heart shaped pendant features hand carved Whitby Jet gemstone that is set within a contemporary and stylish polished heart shaped silver frame with a beautifully curved finish. The pendant is sold complete with an 18 inch silver chain. All our Whitby Jet jewellery is designed and crafted within our very own workshops in Ashbourne, Derbyshire where a team of skilled craftsmen turn the raw Whitby Jet stone into these stunning pieces of jewellery. You can find other matching Whitby Jet jewellery and other Whitby Jet necklaces online and instore. Silver Whitby Jet Half Filled Heart Necklace. Pendant 10.5x12.3mm.