Glow in the Dark Luminous Stone Conch Sea Shells Aquarium Fish Tank Decoration 1. 100% brand new and high quality 2. 10pcs in 1 bag of man-made pebbles. 3. Pebble conch sea shells style, perfect for decoration. 4. Sutiable for fish tank, pebble road, wall, vase, flower pot, swimming pool etc. 5. Material: Photoluminescent pigment + resin