SuperLi 100 Pcs Luminous Cobblestones Pebbles Stones Glow in the Dark for Aquarium Fish Tank Gravel Decorations,Fantastic Garden or Yard (blue)

"Product Features: Material: Photoluminescent pigment + resin 100 piece set of man-made pebbles. Size: about 20*30*10mm/Pcs.Pebbles are about the size of cooked lima beans. It is a good gravel ornament for your garden ,yard or aquarium fish tank....