9ct yellow gold whitby jet toscana side marquise ring r513 this ring is part of our stylish toscana collection and featuresa stunning marquise shaped cabochon of fine whitby jet stone that has been sourced from the whitby coastline north yorkshire the stone is framed within a 9ct yellow gold setting and is completed with a classic yellow gold band 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