Silver Whitby Jet Heart Sphere Pendant Necklace. P3014. This contemporary pendant is part of our Eclipse collection and features fine Whitby Jet stone that has been sourced directly from the north east coast of Yorkshire. The highly polished stone is inlaid within a smooth, solid sterling silver sphere, creating a thoroughly modern design fit for any occasion. The pendant is presented on a fluid 18 inch sterling silver chain complete with a classic bolt ring clasp for easy wear. 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 necklaces on our website. Silver Whitby Jet Heart Sphere Pendant Necklace. Pendant 11x11mm, Whitby Jet stone 7x5mm.