Știri despre bijuterii

925 china The main difference between seawater pearls and freshwater pearls

Postat pe de Kingjy

The essential difference between seawater cultured pearls and freshwater cultured pearls lies in the different surgical methods. The culture of seawater pearls is called “nucleation”, which means that a round bead nucleus that has been processed in a shell is inserted into the mother-of-pearl. The operation of cultivating pale pearls is called “insertion”, which is to cut off the mantle of the mother-of-pearl (actually a piece of flesh) and insert it into another mother-of-pearl. After the operation, the pearl component secreted by the pearl oyster wraps the “nucleus” sau “sheets” to form a pearl. It is also for this reason that seawater pearls are large and round, and their value is also high; freshwater pearls are rare.

Both Japan and China are the most important countries in the production of cultured pearls. Japan almost monopolizes the production of seawater pearls, while the domestically produced freshwater pearls account for more than 90% of global production.

What is Caixia half pearl?

In the late 1990s, in the European and American jewellery market, a kind of “champagne color hazel beads” (also called half-face beads) became a popular pearl jewelry. The nacre layer of the half pearl is also composed of two mineral phases of calcium carbonate (CaC03)-aragonite mainly and a small amount of calcite, so it has a uniform and strong luster, and because of the high proportion of aragonite (content More than 90%), which leads to the occurrence of light interference involving diffraction and a strong halo. This halo is beautiful and charming, which is not available in other gems. This is also the main reason why Caixia half-edge beads are popular with ladies. .

Whether it is seawater pearls or freshwater pearls, after being made into jewelry, they are equally charming.

 

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