Features: Made from resin material, non-toxic and eco-friendly, safe to fish and plant. The glow stones are made into different shapes in with different colors, which will be delivery at random. Suitable for decorating aquarium, vase, waterscape, garden walkway, landscape, etc. Put the stones under sunlight, they will absorb light and glow in the dark, very beautiful. These decorative stones can make your aquarium look much special and attractive. Specifications: Quantity: 100pcs/ 200pcs/ 300pcs(optional) Material: Resin Packing List: 200 * Pieces of Stones