18ct Yellow Gold Sapphire & Diamond Halo NecklaceIntertwining classic craftsmanship with a contemporary flair, courtesy of this 18ct yellow gold sapphire and diamond necklace. The oval shaped sapphire imbues a deep royal blue shade and is surrounded by a sequence of round cut sparkling diamonds, which seamlessly follows the contours of the centre stone. The versatile necklace has an adjustable length of 16 18", allowing you to wear it at your desired length alone, or layer with other necklaces.