About this item DIY decorations: this light gravel set is very decorative. You can place them as you like and stick them onto the surface of ceramic paper glass and other objects. Very beautiful. Wonderful luminous stones: these gravel sands can absorb and store light and then glow in the dark. The light can last several hours and then gradually darken. Use it with confidence: these light sandstones are safe non-toxic and non-radioactive and harmless to your animals and plants. You can use them with confidence. Convenient for storage: with a sealed waterproof and moisture-proof bag, these crushed stones are easy to store no special storage requirements and are environmentally friendly and durable. Wide range of applications: decorative gravel can be applied to indoor and outdoor floors such as decorative pools, bars, aquarium vases and hallways such as plant beds or ponds.