Siren Necklace - Brown*Iridescence Collection* Say hello to the Siren Necklace. It is handforged from raw brass and inspired by the scales found on the mythological mermaid. Fancy chain dangles from the bottom scale which provides movement. It features a brown mother of pearl and is also available in grey and deep fucshia. Mother of pearl is believed to heighten intuition and protect from negative energy. Metal: Raw brass (nickel free) Chain: Antique brass (nickel free)