The September Birthstone is Sapphire, a stone of pure romance that represents a love as deep as the darkest sea. Known by the Grecians to protect from envy, it's a dreamy talisman for lovers and dreamers alike. September Birthstone Jewellery makes a meaningful gift for loved ones. Stack our September Sapphire Birthstone Necklace with the Initial Necklace for personalised everyday essential jewellery.