Adorable Woman Steampunk Glow in the Dark Heart Necklace By Lifetime This is a beautiful, silver plated heart shaped pendant which shows a gorgeous aqua glow in the dark. The glow in the dark resin and the glowing crystals need light to charge. The stronger the light is and the longer it's left under the better and longer-lasting the glow will be. The delicate, beautiful metal work is supported by the solid core making it a substantial piece. It's beautiful in the daylight, but absolutely lovely when it starts to glow. Chain Length: 17.5, Pendant: 1.22"