Mermaid Ji freshwater pearls are hard and smooth products produced by mollusks. Freshwater pearls are generally used in jewelry and treasure industries. The unique luster of pearls is caused by the reflection and diffraction of light on these transparent pearl layers. The thinner the nacre, the more beautiful the luster. Mermaid Ji is a kind of high quality jewelry. Usually made of precious metals such as gold or platinum, inlaid with bright diamonds or other precious stones. The design of mermaid Ji usually combines the elements of mermaid such as fish tail and fish scales, giving people a mysterious and elegant feeling. The price of freshwater pearls is relatively low, while mermaid Ji is a kind of high-quality jewelry with relatively high price.