9ct yellow gold whitby jet toscana marquise twist ring r512 this striking ring is part of our toscana handmade jewellery collection andfeatures a marquise shapedcabochon of fine whitby jet stonewhich has been sourced locally from the whitby coastline north yorkshire the stone is framed within twisted 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 skil