18ct white gold whitby jet 006ct diamond marquise twist necklace p1704 this exquisite necklace features a stunning marquise shaped cabochon of the finest whitby jet stone sourced directly from the north east coast of yorkshire the beautiful 18ct white gold frame is embellished by dazzling 006 carats of brilliant cut diamonds the pendant hangs gracefully from a fluid 16 inch long 18 carat white gold chain complete with a classic bolt ring clasp for easy wear at c w sellors we have an exp