Silver Whitby Jet Patterned Oxidised Heart Pendant Necklace. P2602. This contemporary pendant features a heart shaped highly polished hand carved Whitby Jet stone, framed by a heart shaped patterned Solid Sterling Silver surround. 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 Patterned Oxidised Heart Pendant Necklace. Pendant 24x14mm, Whitby Jet; 8x6mm.