Sterling silver whitby jet marcasite rhombus necklace p1315 this whitby jet and sterling silver pendant features a hand carvedrhombus shapedwhitby jet gemstone whichhangs from an 18 sterling silver chain the gem isset within a detailed beaded sterling silverframe accented with sparkling marcasite gemstones creating a beautiful piece which completes any outfit all our whitby jet jewellery is designed and crafted within our very own workshops in ashbourne derbyshire where a team of s