Zargarlik buyumlari yangiliklari

cubic zirconia jewelry How does the “iridescent luster” on the pearl surface come about?

Joylashtirilgan bilan Kador

According to the research and introduction of Mr. Shen Caiqing: The fascinating “iridescent luster” (also called “pearl luster”) of pearls is related to the structure and organic matter of the pearl. The chemical composition of pearls is mainly calcium carbonate, accounting for 91%-96%, organic matter accounting for 2.5% ga 7%, and water accounting for 1.5% ga 2%. The production of “iridescent luster” is mainly related to two different structural minerals formed by calcium carbonate. Calcium carbonate can form two isomeric minerals of calcite and aragonite. These two minerals grow in a layer of calcite and a layer of aragonite, and the layers are cemented by organic matter. This structure allows light to pass through the pearl, the reflection and scattering of the light between the two layers of different minerals will cause interference and diffraction of the light, which forms the special optical phenomenon of “iridescent luster”, and pearls can become precious jewelry. The main reason.

Why do pearls have multiple colors? Tabiatda, there are pearls of various colors, which are due to the presence of other metal elements. The main chemical composition of pearls is calcium carbonate, among which copper-containing pearls are often golden yellow; silver-containing pearls are creamy yellow; sodium-containing pearls are flesh-colored; zinc-containing pearls are pink. The pure pearl is as white as jade. In the international jewelry market, pink pearls are the most precious.

Pearl processing is an important part of adding value to pearls. The processing process can be divided into two stages: initial processing and reprocessing. Initial processing includes perforation (both single-head and double-head punching machines), bleaching (bleaching reagents are mainly composed of bleaching agents, solvents and surface active agents, and the specific formula is highly confidential) and color correction; Reprocessing mainly refers to processing for decoration (including design and inlay).

Japan is the most advanced pearl processing technology in the world, while Shanghai’s technology is the most mature in my country.

 

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