The pebbles need enough sunlight to absorb ultraviolet light before they can shine in the dark. <br> The multi-color glowing in the dark pebbles can be used to decorate roads, lawns and gardens.<br> Can be used to decorate potted plants, and gardening. <br> Also used to decorate fish tanks, and swimming pools. <br> Suitable for some special occasions, parties and so on. <br> Your garden will look fabulous with these cute luminous pebbles and give you a dreamy feeling as if in the fairy world. <br> Material: Resin<br> Color: Mixed color<br> Size: about 2.2cm<br> Package included: 100pcs Luminous Stones<br> Attention Please:<br> Keep away from children for chocking hazard ! <br> Put the stones under the sun or light for a few hours to activate light.<br> These pebbles are soft glow and will hard to notice glow in bright sport, keep them away from any lighting source for better glowing effect at night.<br>