Material: Photoluminescent pigment + resin
100 piece set of man-made pebbles.NOTE:After absorbing enough sun or light, the pebbles will glow .
Please expose the stars stickers to the sun in the daytime to absorb enough light, so that they can glow in the night better.
Get replacement or 100% money back if not glow
It is a good gravel ornament for your garden ,yard or aquarium fish tank.
Luminous Cobblestones 100 Pcs Pebbles Stones Glow in the Dark for Aquarium Fish Tank Gravel Decorations Fantastic Garden or Yard - B01M11K6BO