Glow in the Dark: Approximately 200 non-toxic glowing resin pebbles per bag. These pebbles absorb enough sunlight or artificial light during the day to glow for up to 3-6 hours at night or in any other dark environment. Safe and Eco-friendly: No electricity needed . These light stones are made of quality resin, which is durable, tasteless and non-radioactive. Workmanship and fine polishing, so no sharp edge. DIY decoration: On parties or special days, for example, someone’s birthday. Nothing is more beautiful than giving a gift in person. So you can decorate the gift with these sparkling light stones to surprise your friend or loved one. 200 blue pieces: After purchase, you will receive 200 pieces of blue sparkling stones with which you can decorate places or decorate special holidays, such as commemoration of a deceased or Halloween to add a festive atmosphere. Very good decorative effect: These fluorescent stones are ideal as aquarium gravel, or use them for decorations. decorative