DescriptionNon-toxic just like river gravels. Natural color won't fade away through time. These stones can be used as decoration for fish tanks, plants, vases or other places. Great for aquarium decoration, making your fish tank shiny and beautiful. Excellent for aquariums, terrariums, flowerpots, glasswares, vases, beach weddings.Features- Brand: POPETPOP. - Color: Black. - Material: Glass sand. - Package Size: 24 x 17 x 5 cm. - Polished Surface: Smooth and easy to clean. Make sure to rinse 3-4 times before use, but DO NOT rub violently. - Widely Usage: Excellent for aquariums, terrariums, flowerpots, glasswares, vases, beach weddings, fountain decorations. Please keep it away from children under 3. - Safe Long Lasting: just like river gravels. Natural color won't fade away through time. These stones decorate the fish tank and also maintain the water clean. - Natural Decorative Pebbles: Set up a natural and shining looking for your home. - Warm Tip: Dear buyer, due to lighting effect, monitor's brightness, manual measurement, etc., there could be some slight differences in the color and size between the photo and the actual item. Sincerely hope that you can understand! Thank you!