18ct White Gold Blue John 0.21ct Diamond Marquise Necklace, P3325 This timeless 18ct white gold necklace features a marquise shaped cabochon of fine Derbyshire Blue John, that has been sourced directly from Castleton, Derbyshire. This stunning gemstone is accentuated perfectly by a sparkling halo of brilliant cut diamonds, totalling 0.21cts. Designed perfectly for everyday wear, this gemstone set pendant is completed with a secure 18ct white gold chain. At C W Sellors, we have an expert team of gemstone and diamond specialists who handpick and grade each jewel to meet our high standards and a team of talented in house designers who combine their talents to bring you our exclusive Precious Gemstone collection. You can find other Blue John pieces online and in store to complement this necklace. All articles purchased from C W Sellors are lovingly and securely dispatched with our elegant jewellery packaging.  Dimensions 14mm x 8mm