New 18k Gold Filled Our Lady of Graces Pearl Rosary Necklace. A religious jewelry dedicated to faith Metal: 18k Gold Filled Length 18 inches long 4mm simulated pearls Hypoallergenic jewelry Water-resistant Brand: Sarrah Will your necklace tarnish? No. If for any reason, any 18k gold filled tarnishs to black or green color it is because IT IS NOT GOLD FILLED. Simple like that. Is this necklace hypoallergenic? Yes, this necklace is hypoallergenic, which means, manufactured under strict health guidance regulations. I have complied with CA prop 65 and EU regulations.