18ct white gold whitby jet 079ct diamond marquise ring 312 3967 08 2 this elegant 18ct white gold ring featuresa marquise shapedhand carved whitby jet stone that has been sourced directly from the north east coast of yorkshirethis ring boasts a total of 079 carats of baguette cut diamonds that are set into the shoulders giving a truly dazzling display of light and colour all our whitby jet jewellery is designed and crafted within our very own workshops in derbyshire where a team of skill