Silver Preseli Bluestone Single Stone Twist Pendant Necklace. P1952C. This contemporary pendant features a single, hand carved and highly polished long pear shaped Preseli Bluestone. The highly polished stone is set within a simple sterling silver twist pendant. 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 Preseli Bluestone Single Stone Twist Pendant Necklace. Pendant 40x15mm including bale.