Features: Made of high quality resin, non-toxic and odorless, no radioactive substance. Fluorescent Glowing Effect Body Reaction Glowing Base, No Power Supply or Battery Required. Pebbles need enough sunlight to absorb ultraviolet light before they can glow in the dark. Our multi-color glow-in-black pebbles can be used to decorate roads, lawns and gardens; It can be used for potted plant decoration and gardening; It is also used to decorate aquariums and swimming pools; It is suitable for special occasions, parties and so on. The light of black pebbles from the dark is the best décor at night. Specifications: Color: dark green, green, dark blue, light blue, yellow, white, pink, light orange, mix of colors, dark purple, orange and yellow Size: 60*50*50mm Material: resin Package included: 30*glowing dark stone