Moist and bright luster is the main source of pearl beauty, so the better the luster, the more expensive the pearl. When choosing pearls, put them on a soft white cloth and look at the light. You can see colorful light similar to a rainbow, with rich layers and strong reflective luster.

Step 2 look at the shape

As the saying goes, pearls are as round as jade, and "you get what you pay for", which means that the rounder pearls are, the more valuable they are, and the more collectible they are. Large round pearls are the rarest and most precious. Flat and oval pearl necklaces are relatively cheap, round ones are a bit inferior, and round ones are the least common.

3. Look at the end of it

Not every pearl's surface is so smooth and round. Generally, there are some defects, such as lines, dots, marks, pits, dots and so on. The fewer defects, the more precious. But flawless beads, after all, are few and expensive, not ordinary consumer goods. Therefore, if you can't see the flaw at a distance of 0.5 meters, you will think it is a standard product.

Step 4 look at the size

As the saying goes, "seven pearls make eight treasures." Generally, pearls below 6 mm do not belong to the category of jewelry-grade pearls, and 7-9 mm pearls are generally loved by consumers. 10 mm pearls are rare, and only Nanyang pearls and black pearls are above11mm. The bigger the particles, the less the quantity and the higher the price.

5. Look at this color

The color and species of pearls are related. The natural colors of freshwater pearls are common in white, pink and purple. However, the common seawater pearls are white, gray and gold. There are also black pearls in Tahiti. The common colors are black and peacock green, which are relatively rare and the price is relatively high.

6. Look at this design

Pearl ornaments should not only choose the best beads, but also connect these beads in series by good designers, which can be inlaid with precious stones and metals such as gold, silver, jade and diamonds. Good design can not only add icing on the cake, but also maximize the beauty of the pearl itself.

Extended data

Principle of pearl formation

External cause: The mantle of mussel is stimulated by the invasion of foreign bodies (sand, parasites). The epidermal cells in the stimulation area take foreign bodies as the core and fall into the connective tissue of the mantle. Some of the trapped epidermal cells divide themselves to form nacre, which secretes nacre, and nacre is wrapped layer by layer to form pearls. Pearls with foreign bodies as the core are called "nucleated pearls".

Internal cause: after pathological stimulation, a part of the outer skin of the tunica adventitia is separated after cell division, and then it is wrapped by organic substances secreted by itself, and gradually falls into the connective tissue of the tunica adventitia, forming a pearl sac and then forming a pearl. Because there is no foreign body as the core, it is called "seedless pearl".

According to the above principle, cultured pearls are cut off from the mantle of cultured mussels by artificial methods and implanted into the connective tissue of the mantle together with the artificial nucleus prepared by mussels. Implanted cell fragments proliferate rapidly around the artificial nucleus under the nutrition provided by connective tissue, forming pearl sacs and secreting nacre, thus producing artificial nucleated pearls.

Artificial seedless pearls are pearls produced by implanting only small pieces of cells into the mantle, forming pearl sacs through cell proliferation, and secreting mother-of-pearl into the sacs.

People's Network-How to choose an elegant and charming pearl ornament

Baidu Encyclopedia-Pearl