Review on 🪨 Black Pebbles Aquarium Gravel River Rock - 18lb Bag, Natural Polished Decorative Gravel for Garden Outdoor Ornamental River Pebbles Rocks, Black Stones and Vase Fillers - Landscaping and Landscaping Decor (18.6) by Belinda Rivas

These stones are beautiful and well suited for aesthetic purposes. The listing doesn't mention any paint or coated finishes on the rocks so I quickly made a purchase for my newly purchased tank. Even though the water washed through my clean tub, the rocks severely scratched the surface. After transferring the stones to another container I found that these were not scratches but a coating on the stones. In the first shot you can see the dramatic change in appearance from the outer shell to the inner. This is not natural with any fallen stone.