Features: Made from resin material, eco-friendly, safe to fish and plant. The glow stones are made into diamond-shaped in with different colors for you to choice. 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 or outdoor walkway look much special and attractive. Specifications: Quantity: 100pcs/ 200pcs/ 500pcs(optional) Color: Mixed Color/ Dark Blue/ White/ Dark Green/ Purple/ Pink/ Light Green/ Orange/ Yellow/ Light Blue/ Fluorescent Green(optional) Material: Resin Packing List: 500 * Pieces of Stones