18ct White Gold Blue John White Mother Of Pearl Small Double Sided Oval Fob Necklace, P219. This beautiful double sided fob style necklace features the finest Blue John and White Mother Of Pearl. The hand carved gemstones are flush set into the organic, contemporary oval shape giving a smooth and highly polished finish. Sold complete with an 18 inch 18ct white gold chain which fastens with a classic bolt ring style clasp. Dimensions: 18mm x 15mm. All our Blue John and White Mother Of Pearl jewellery is designed and crafted within our very own workshop where a team of skilled craftsmen transform natural gemstones into these stylish pieces of jewellery. You can find other matching Blue John and White Mother Of Pearl jewellery on our website. All articles purchased from C W Sellors are lovingly and securely dispatched with our elegant jewellery packaging.