Just like vitamins, minerals and water for humans, your tortoises and turtle also need for bright colors, healthy breeding, molting and play! So, when you add our mineral stone to your tank you’re giving your turtle friends, the ! Features -Color: White. -Material: Calcium. -Size: About 1.20X1.20X1.20cm/0.47X0.47X0.47in. - Safe for , reptiles, terrestrial animals and other aquatic animals. - With rich trace elements, this calcium stone has a longer life and it is really economic. - Easily used. You do not need to wash it and it can be put in the fish tank directly to be used. - Economic Friendly, the nutrient composition is in the calcium stone and can dissolve which will not pollute the water. - The calcium stone is decomposed easily, but it will not pollute. Package list: 12 tank calcium stones Product Notes: Please allow a little manual errors.Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please confirm acceptance before ordering. About Shipping: Please ensure your shipping informations are correct to avoid delivery issues. All orders are shipped within 3 days after payment. Delivery usually takes 8–12 days, The specific delivery time is depend on circumstances. If you have any questions during your purchase, feel free to contact us. We will respond you within 24 hours.