how a pearl is made?
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Natural Pearls form when an irritant - usually a parasite and not the proverbial grain of sand - works its way into an oyster, mussel, or clam. As a defense mechanism, a fluid is used to coat the irritant. Layer upon layer of this coating, called 'nacre', is deposited until a lustrous pearl is formed.
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A natural pearl is thus born. A Cultured Pearl is formed in the same process as a natural pearl. The only difference is that it begins by inserting a shell bead nucleus inside the oyster and irritating the oyster to produce the layers of nacre. ... A well- matched natural pearl strand can be extremely pricey.
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The culturing process of a Tahitian pearl involves an expert grafter, who inserts a bead made from a mollusk shell into the gonad, or reproductive organ, of the mature Pinctada margaritifera mollusk. ... The shell is sanded and rounded to form the bead, so the pearls produced have a rounder shape.
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There are two basic varieties of cultured pearls; freshwater and saltwater. Freshwater pearls are grown primarily in man-made lakes and reservoirs in China. Saltwater pearls, which include akoya, Tahitian and South Sea, are grown in bays, inlets and atolls in many places around the world.
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Though classified as a gemstone, pearls are extremely unique, largely due to the fact that they are the only gem material formed and found within a living creature. Unlike diamonds, rubies, emeralds and more, pearls require no cutting or polishing before use and are simply stunning the way they naturally form.
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Shell Pearls are made from the inner lining of oyster shells, also known as Mother of Pearl. The substance is ground to a fine powder, shaped, dyed and coated with natural pearl nacre and then a protective coating to give it lustre. ... Indeed, they are more durable than cultured and freshwater pearls.
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Although clams and mussels can also produce pearls, they don't do so very often. Most pearls are made by oysters, and they can be made in either freshwater or saltwater environments. As oysters grow, an internal organ called the mantle uses minerals from the oyster's food to produce a substance called nacre.
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Freshwater pearls are grown primarily in man-made lakes and reservoirs in China. Saltwater pearls, which include akoya, Tahitian and South Sea, are grown in bays, inlets and atolls in many places around the world.
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For the uninitiated, nacre is what gives a pearl its metallic sheen. The average nacre of an Akoya pearl is between 0.35mm to 0.7mm, whereas the nacre of a South Sea pearl measures 2mm to 6mm. This unusual thickness is what gives the South Sea pearl a unique sheen that is often perceived to be soft and captivating.
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Here's the best tip on how to tell if pearls are real: The Tooth Test: Simply rub the pearl against your tooth, softly. If the pearl is natural or cultured, you will feel the surface as gritty. If the pearl is a faux gem, then the surface will feel smooth.
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The pearl is the shaped nacre formed on the foreign object. Mother of Pearl is shaped like the shell – and so it can cover larger areas such as watch faces, whereas a pearl is usually shaped round and made into beads etc.
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These beautiful round jewels are the result of a biological process within the oyster as it protects itself from foreign substances. Although clams and mussels can also produce pearls, they don't do so very often. Most pearls are made by oysters, and they can be made in either freshwater or saltwater environments.
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How Do Oysters Make Pearls? Layer upon layer of nacre, also known as mother-of-pearl, coat a grain of sand until the iridescent gem is formed. ... Cultured pearls are made in the same way. The only difference is that instead of accidental circumstances, a "pearl farmer" embeds a grain of sand into the mollusk.
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However, on average, a pearl's value ranges from $300 to $1500. South Sea - sourced pearls are considered the most valuable. They are also the largest pearl variety on the market.
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A cultured pearl results from the process by which a pearl farmer induces pearl formation by inserting an irritant into the mollusk and then “cultivating” the pearl. Cultured pearls are real pearls that were not formed by accident of nature.
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The pearls produced by the Pinctada maxima, or the Tahitian pearl oyster, come in nearly every conceivable color, shade and overtone. These colors are completely natural, and except in the case of treated chocolate Tahitian pearls, the Tahitian pearls carried by Pearl Paradise are completely untreated.
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The main difference between Opal and Pearl is that the Opal is a silica mineral and Pearl is a hard object produced within the soft tissue of a living shelled mollusc. Opal is a hydrated amorphous form of silica (SiO2·nH2O); its water content may range from 3 to 21% by weight, but is usually between 6 and 10%.