Sterling Silver Whitby Jet Mother of Pearl Space Swivel Fob Necklace. P122_11. This elegant and sophisticated necklace is part of our Heritage handmade jewellery collection and boasts a stunning reversible swivel design with an oval piece of dazzling Mother of Pearl, on one side and a fine piece of black Whitby Jet stone on the reverse side. The stones are framed within an exquisite Sterling Silver setting. The pendant sits gracefully on a delicate Sterling Silver chain that is completed by a classic bolt ring clasp for easy wear. All our Mother of Pearl and Whitby Jet jewellery is designed and crafted within our very own workshops in Ashbourne, Derbyshire where a team of skilled craftsmen transform the natural stones into these stunning pieces of jewellery. You can find other matching jewellery on our website. Dimensions 13 x 10mm stones, complete with an 18\" Sterling Silver chain.