Tuesday, February 26, 2019

What does cultured freshwater pearls mean?

Because of this, pearl has become a metaphor for something rare, fine, admirable and valuable. The most valuable pearls occur spontaneously in the wild, but are extremely rare. These wild pearls are referred to as natural pearls.
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Baroque pearls are pearls with an irregular non-spherical shape. Shapes can range from minor aberrations to distinctly ovoid, curved, pinch, or lumpy shapes. Most cultured freshwater pearls are baroque because freshwater pearls are mantle-tissue nucleated instead of bead nucleated.
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A bail (also spelled "bale") is a component of certain types of jewelry, mostly necklaces, that is used to attach a pendant or stone. The bail is normally placed in the center of the necklace where the pendant hangs. Some bails are made so a pendant can be attached after the necklace production is completed.
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The color pearl is a pale tint of off-white. It is a representation of the average color of a pearl. The first recorded use of pearl as a color name in English was in 1604. The color used in interior design when an off-white tint is desired.
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Most freshwater cultured pearls sold today come from China. Saltwater pearls grow within pearl oysters, family Pteriidae, which live in oceans. Saltwater pearl oysters are usually cultivated in protected lagoons or volcanic atolls.
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The most valuable pearls occur spontaneously in the wild, but are extremely rare. These wild pearls are referred to as natural pearls. Cultured or farmed pearls frompearl oysters and freshwater mussels make up the majority of those currently sold.
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Cultured freshwater pearls are pearls that are farmed and created usingfreshwater mussels. These pearls are produced in Japan and the United States on a limited scale, but are now almost exclusively produced in China.
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Fresh oysters must be alive just before consumption or cooking. There is only one criterion: the oyster must be capable of tightly closing its shell. Open oystersshould be tapped on the shell; a live oyster will close up and is safe to eat. Oysterswhich are open and unresponsive are dead and must be discarded.
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Not all mussels and oysters produce pearls. In a haul of three tons, only three orfour oysters will produce perfect pearls.
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Oysters naturally grow in estuarine bodies of brackish water. When farmed, the temperature and salinity of the water are controlled (or at least monitored), so as to induce spawning and fertilization, as well as to speed the rate of maturation – which can take several years.
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