Sterling Silver Whitby Jet Marcasite Wide Rhombus Framed Stud Earrings. E936. These elegant earrings feature two striking cushion shaped cabochons of the finest Whitby Jet stone, sourced directly from the north east coast of Yorkshire. The highly polished gemstones are placed within exquisite sterling silver embellished with dazzling marcasites for a vintage sparkle. Completed with secure post and butterfly fittings All our Whitby Jet jewellery is designed and crafted within our very own workshops in Ashbourne, Derbyshire where a team of skilled craftsmen transform natural pieces of Whitby Jet into these stunning pieces of jewellery. All articles purchased from C W Sellors are lovingly and securely dispatched with our elegant jewellery packaging. Dimensions: 17mm x 15mm, Whitby Jet: 10mm x 9mm.