Features:
Safe, non-radioactive, eco-friendly and reusable.
No electricity required, just put pebbles in the sun for an hour or more, it will glow in the dark.
Also can absorb the lamplight from eletric light indoor.
The longer the exposure time under sunlight, the stronger it shines.
Perfect for garden, fish tank, aquarium, plant pots, walkway, ect.

Specifications:
Material: resin
Color: green, orange, blue, multicolor (optional)
Quantity: 50pcs, 100pcs (optional)
Package size: 150 * 140 * 15mm / 5.9 * 5.51 * 0.59in
Package weight: 100g / 3.53ounces (50pcs)
200g / 7.05ounces (100pcs)

Note: Due to the different display screen and light effect, the actual color of the item might be slightly different from the color showed on the pictures.

Package List:
50/100 * Glowing Rocks (Optional)