WishMe Noctilucent Pendant Necklace Glow in the Dark Tai Chi Material: Alloy & White Gold Plated. Chain Size: 60 cm (23.6"), Pendant Size: 3.3 cm (1.3") Noctilucent Necklace Is Funny Design. Pendant is colorful at day time. To avoid tarnish, limit exposure to water, perfume, or body cream. This Lovely Necklace Is Not Only A Perfect Gift But A Wonderful Accessory.