Silver Whitby Jet Marcasite Long Oval Pyramid Bead Edge Necklace. P2116. This stunning pendant features an oval shaped hand carved Whitby Jet gemstone set at the heart of a Sterling Silver and pyramid beaded Marcasite frame. A very eye catching pendant with a vintage feel, this piece uses only the finest Whitby Jet stone, which has been sourced directly from the North East coast of Yorkshire. The pendant hangs beautifully from a fluid 18" silver chain. All our Whitby Jet jewellery is designed and crafted within our very own workshops in Ashbourne, Derbyshire where a team of skilled craftsmen turn the raw Whitby Jet stone 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 Marcasite Long Oval Pyramid Bead Edge Necklace. Pendant 21x50mm including bail.