Features: Glow-up Your Aquariums: These resin stone glow a beautiful glowing in the dark, creating a underwater landscape that add touch-magic to your aquariums. Durable and Safe: Made from high-quality resin, these-stones are non-toxic and safe for aquatic-life. which also durable and will not easily break or fade. Perfect for Fish Enthusiasts: Whether you're a seasoned aquarist or a beginner, these glow-in-the-dark stone are perfect for add extra-element of excitement to your aquariums. Great for Any Aquariums: With 50/100 colorful-stones per pack, these light-up stone are perfect for any size aquariums, whether you have a small desktop tanks or a large, elaborate set-up. Create Magic-Underwater World: Use these glowing stone to create a mesmerizing underwater world that is sure to attract both you and your fish. Perfect for nighttime viewing and add a unique-touch to your home decor. Specifications: Product Dimension: approx. Per size 2-3cm/0.78-1.18inch Material: Resin Style Option: Mix-color(50pcs)/Mix-color(100pcs)/Dark-Blue(50pcs)/Dark-Blue(100pcs)/Green(50pcs)/Green(100pcs)/Dark-Purple(50pcs)/Dark-Purple(100pcs)/Light-Orange(50pcs)/Light-Orange(100pcs)/Pink(50pcs)/Pink(100pcs) Package Includes: 1 Bag Luminous Pebble Stone Aquariums Decorations note: Warning: It is small and need to pay attention to the swallowed risk. Please allow 0-1cm error due to manual measurement, please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item.