There are several kinds of pearl ornaments, such as seawater pearls, freshwater pearls, golden pearls and so on. Seawater pearls, also known as Haizhu and Nanzhu, are mainly different from freshwater pearls in the following aspects, and you can identify them according to them: 1. From the shape, Nanzhu is a seawater pearl cultured by inserting nuclei, which is generally a round pearl. If there are beads that are biased towards the flat garden, they are freshwater pearls. Because most freshwater pearls are seedless, it is difficult to obtain round pearls, which are generally rice-shaped, oval and oblate. Therefore, it is very important to judge whether a bead chain is South Pearl from its shape. 2. From the defects: there are few thread-like defects (even shallow threads) on the bead surface of Nanzhu, and the threads of freshwater beads are common, so once the thread-like defects appear on the super bead chain (even shallow threads), you can judge that this bead chain is freshwater beads, not Nanzhu. Lover&;s knot freshwater pearl pendant 3. From the feel: the feel of seawater beads is relatively delicate, while the feel of freshwater beads is coarse, which has a astringent feeling. 4. From the gloss: Generally speaking, the gloss of Nanzhu is gorgeous, and the texture is more transparent than that of fresh water beads. In addition, for the non-premium bead chain, in shape, the non-round beads of Nanzhu are dripping, and there is rarely an oblate trend. The biggest disadvantage of freshwater beads: low density. A freshwater pearl shell can produce more than 10-20 freshwater pearls, and it can grow from seedless to 7-8MM in two years. Such a rapid growth rate causes the pearl structure to be relatively loose, and this relatively low density is exposed on the surface of the pearl, which lacks the firm, delicate and moist texture of seawater pearls. Compared with the South Pearl of the same grade, the luster of the South Pearl is sharper! Therefore, the luster of freshwater beads is easy to fade, and the skin is easy to get covered. Otherwise, the freshwater pearl as a seedless pearl is not the present value. Of course, from the consumption point of view, pearls are a kind of consumables, and the wearing time of pearls is not distinguished by whether they are nucleated or seedless. Although a seedless fresh water bead chain will not lose its skin, once its luster fades to a certain extent, it will lose its practical wearing value. Under the condition of proper maintenance, the actual wearing time of a good Nanzhu necklace will never be lower than that of fresh water beads of the same quality. Coran recommends more pearl ornaments.