Glow In The Dark Jellyfish EarringsThese jellyfish are iridescent. But they also glow in the dark! They are magical earrings that will float on your ears. The earrings measure 8 cm. Some parts of the pendant have been hand modeled to make them more realistic. For the earrings to glow in the dark, you need to leave them in direct sunlight or near a lamp for a few minutes so they can absorb light and make you shine even in the dark.