Description: Put these cobble stones on the edge of the walkway, flower beds and other places, and then after passing sunlight during the day, they will emit blue or green light for up to three hours, which can make your garden more beautiful. Characterized by reusable, the service life of these cobble stones can reach 15 years, and they have the merits of odorless, non-radioactive and eco-friendly. These cobble stones are made of resin material. The diameter of one cobble stone is about 2.2cm. You can use them to decorate the garden, aquarium and so on. Item Name: Cobblestone Material:Resin Size: Mix-color*: 10cmx10cmx2.75cm/3.94inx3.94inx1.08in White: 7.95cmx7.55cmx3.6cm/3.13inx2.97inx1.42in Yellow: 20cmx10cmx5cm/7.87inx3.94inx1.97in Green: 10.05cmx6.5cmx2.9cm/3.96inx2.56inx1.14in Pink: 7cmx5.5cmx4cm/2.76inx2.17inx1.57in Light Blue: 10cmx10cmx3.3cm/3.94inx3.94inx1.3in Light Purple: 20cmx10cmx5cm/7.87inx3.94inx1.97in Dark Purple: 20cmx10cmx5cm/7.87inx3.94inx1.97in Grass Green: 8.1cmx6.9cmx2.7cm/3.19inx2.72inx1.06in Orange Yellow: 20cmx10cmx5cm/7.87inx3.94inx1.97in Light Orange: 20cmx10cmx5cm/7.87inx3.94inx1.97in Darkblue: 10cmx10cmx2.9cm/3.94inx3.94inx1.14in Notes: About 50pcs stones, quantity might has 1-3pcs more or less. Hope you can understand, thank you. Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 50 X Luminous Pebbles Stones Includes 50 pieces of glow-in-the-dark pebbles, perfect for enhancing indoor and outdoor spaces Emits blue or green light for up to three hours after being charged by sunlight during the day Ideal for decorating walkways, flower beds, gardens, and aquariums Made from eco-friendly resin material, ensuring they are odorless and non-radioactive Each pebble has a diameter of approximately 2.2 cm