Whitby Jet Necklace Double Heart Diamond 18ct White Gold. P1451C. This romantic and elegant necklace deserves to be nowhere other than centre stage. It boasts two unmissable heart shaped pieces of fine Whitby Jet stone that has been sourced directly from the north east coast of Yorkshire. The stone is set within enchanting 18ct white gold and surrounded by dazzling 0.53ct diamonds, giving the piece a magical sparkle. The pendant hangs from a delicate white gold 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. 18ct White Gold, Whitby Jet and 0.53ct Diamonds.