What are the differences between freshwater pearls and seawater pearls?
Freshwater pearls differ from seawater pearls in that the former is a non-nuclear pearl and the latter is a nuclear pearl. For this reason, freshwater pearls are a good raw material for beauty pearl powder.
Pearls can be divided into two categories from the source
Seawater pearls and freshwater pearls. There is one kind of seawater pearl in China, that is, the pearl produced by Pteriamartensii in Guangxi and Hainan, called "South Pearl". Freshwater pearls are mainly produced in the middle and lower reaches of the Yangtze River and are produced by the Hyriopsis cumingii or Cristariaplicata.
China is a big producer of freshwater pearls, and its output accounts for 95% of the world's production. Zhuji City, Zhejiang Province is a large base for the cultivation, processing and sales of freshwater pearls in China. The total output accounts for more than half of the country's total output. It is known as “Chinaâ€. The land of pearls." The prosperity and development of the pearl industry provides an opportunity for deep processing of Chinese pearls.
The difference between freshwater pearls and seawater pearls
1. Freshwater pearls are made by directly grafting the outer membrane film cells of freshwater pearls. They are generally cultured for two to three years, and more often for eight to ten years. The internal features are concentric radiation è¶ layered structure, which can produce pearl beauty series, full-component instant pearl nutrition and health care series, etc.; and seawater pearls have only one core, which is grafted.
(1) Freshwater pearls use non-nuclear culture technology, so their composition is pure pearl.
(2) The seawater pearl pearl is only 0.3-0.8 mm thick, while the freshwater pearls are all pearly.
2, freshwater pearls in various shapes, mostly round, as well as rice, semi-circular, flat, pear-shaped, etc., and seawater pearls only have a round one.
3, freshwater pearls have good gloss, it looks like pearly, but the pearly luster of seawater is generally lighter.
The difference between freshwater pearls and imitation pearls and dyed pearls
1. When the two pearls are rubbed, the imitation pearls have a slippery feel, and the true pearls have a sense of sorrow. When the pearl is rubbed on the glass, the imitation pearl has no streaks, and the true pearl has the pearl powder streak. The real pearl is gently scraped with pearl powder, and then it is felt without damaging the pearl after wiping it with cotton cloth or hand.
2, dyed pearls generally poor gloss, looks unnatural, gray and black, such as a cloth with a little 5% dilute nitric acid scrub, there will be black marks on the cloth.
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