Not exactly. Coated pearls are not natural freshwater pearls. They are made by coating a film on the surface of pearls. This film can be natural substances, such as shell crumbs or pearl powder, or artificial materials, such as polyurethane. This coating can change the color of pearls and make them look brighter and more shiny. However, this coating will not affect the internal structure and quality of pearls. Therefore, coated pearls are usually cheaper than natural pearls. If you want to buy natural freshwater pearls, you can choose uncoated pearls to ensure purity and quality.