18ct White Gold Ruby and Diamond Pear Swirl Necklace. P3183. This classic 18ct white gold pendant features a gorgeous pear cut ruby with a weight of 0.83 carats. The ruby is framed by an elegant swirl design set with 0.12 carats of sparkling white diamonds. The pendant is presented on an 18 inch 18ct white gold chain with a bolt ring clasp. 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 ruby and diamond pieces online and in store to compliment this necklace. All articles purchased from C W Sellors are lovingly and securely dispatched with our elegant jewellery packaging.