100x Glow in The Dark Pebbles Stones Luminous Garden Walkway Aquarium Fish Tank
Size: about 18×25×11mm. 100pcs Glow In The Dark Pebbles Stones Luminous Walkway Garden Fish Tank Decor. After being exposed under the sunlight or put stones under strong light (lamplight) for an hour, Glow stones can glow for hours in the dark.