page_title: Cultured pearl
section_title: Modern industry
hierarchical_section_title: Cultured pearl / Modern industry
caption_attribution_description: Tiếng Việt: Nhân của ngọc trai nuôi cấy là một tâm đặc, kích thước lớn được con người cấy vào cơ thể con trai. Có nhiều trường hợp viên ngọc trai nuôi nhưng hình dáng bên ngoài trông rất giống ngọc tự nhiên. Điều này có thể dễ dàng phát hiện dưới máy chụp X-ray ngọc học. English: The nucleus of cultured pearls is a large, compact, implanted human-made core bead. There are many cases where the pearl is cultured but the appearance is very similar to that of a natural pearl. This can be easily detected under the gemological X-ray machine.
context_page_description: A cultured pearl is a pearl created by a mussel farmer or oyster farmer under controlled conditions. Cultured pearls can be farmed using two very different groups of bivalve mollusk: the freshwater river mussel, and the saltwater pearl oysters.
context_section_description: The development of cultured pearls took much of the chance, risk, and guesswork out of the pearl industry, allowing it to become stable and predictable, and fostering its rapid growth over the past 100 years. Today, more than 99% of all pearls sold worldwide are cultured pearls. Colored Pearls, which occur due to local chemicals inside the shell, much in the way of rubies or sapphires, can be made by inserting natural dyes into the mussel shell, e.g., cobalt chloride to create a pinkish color.
  Cultured pearls can often be distinguished from natural pearls through the use of x-rays, which reveals the inner nucleus of the pearl.
caption: X-ray of a cultured pearl set in jewelry
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