Silver Whitby Jet Cushion Foxtail Necklet. N961. This exquisite necklace is part of our popular Foxtail collection and boasts a cushion shaped cabochon of Whitby Jet stone that has been directly sourced from the North East coast of Yorkshire. The stone has been set on an intricately woven sterling silver foxtail chain that hangs gracefully around the neck. 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 Cushion Foxtail Necklet. Whitby Jet: 29mm x 29mm, total chain length 58cm.