18K white gold round topaz and diamond halo necklace18K white gold Pendant length is 8mm. Features a 1. 0ct centre round brilliant cut topaz. Includes a 45cm trace chain with adjustment at 43cm. Our coloured gemstones are natural so there can be a slight variance in colour. This piece was designed and produced by Artelia Jewellery. Allow 3 4 weeks for delivery. Complimentary shipping. All Artelia pieces are covered by a lifetime manufacturers warranty.