Yuan·Ma Zhiyuan's "Little Peach, Four Sons, House, Summer": "The curtains are twelve hanging pearls, and the swallows come and go."
Qing·Chen Weijun’s words: "Drunken Huayin·Chongyang and Yuyu Yun": "Tonight is Chongyang, not rolling pearls, and bursting into the west." In fact, pearls are also called pearls, which have always been elegant models. It is a kind of jewelry with a historical and cultural heritage. Then, many people will be curious. There are so many kinds of pearls in nature, which ones are of higher value?
There are many colors of pearls: white, gold, silver, pink, red, black, blue, gray, etc., among which white is slightly reddish red, blue and black with metallic luster is excellent, but if you see obvious The black and gray pearls should be vigilant and may be stained beads. The method of distinguishing dyed and true color pearls is: natural black pearls are not pure black, but dark blue black with a rainbow-like glitter, or black with a bronze hue; dyed pearls are grayish black and black, with monotonous color and poor gloss. If the pearl is scrubbed with a little 5% dilute nitric acid in the cloth, black marks will remain on the cloth. Consumers should pay special attention when purchasing expensive black pearls.
First, from the appearance: the shape of the pearl is various, there are round, pear-shaped, egg-shaped, teardrop shape, button shape and arbitrary shape, of which the circle is preferred.
Second, from the color point of view: There are the most common white, black, gold, light yellow, light green, light blue, brown, lavender, etc., mainly white.
Third, from the distribution of the origin: seawater is more precious than freshwater.
Fourth, from the gloss point of view: the brighter the brighter the better, and evenly, with a rainbow-like halo.
5. From the surface: In the process of growing pearls, some pits, protrusions and dirt are often formed. Therefore, the surface of a good pearl should be very smooth and the color should be uniform.
Sixth, from the size point of view: the bigger the pearl, the better, the natural pearl is generally slightly smaller than the cultured pearl.
In addition, since the composition of the pearl is calcium carbonate, the maintenance of the pearl is particularly important. When it is dirty, wipe it gently with a clean cloth, do not expose it to sunlight, and do not wear it during the summer to prevent sweat. The acid in the soil defaces the pearl.
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