Sterling silver whitby jet toscana marquise necklace p1675 this stylish necklace is part of our toscana collection and features an expertly hand cut whitby jet marquise shaped stone which has been framed in a sterling silver curved drop design which the chain passes throughthe pendant is sold complete with an18 sterling silver chain 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 the