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How to identify true and false pearl necklaces custom silver jewelry Maltese Knights

Опубликовано в от Король
обычай 925 Серебряные ювелирные изделия
обычай 925 Серебряные ювелирные изделия

 

True and false identification of pearl necklace
The authenticity of pearl necklaces can be identified by friction method, intuitive method, hand feel method, и т. д..

1. Friction method:

[Real pearls] Since real pearls are mainly composed of calcium carbonate, and their structure is concentric crystalline layered (shingled) структура, two pearls are rubbed against each other, and the one with rough and sandy feeling is real pearl; In a quiet environment, rub it against your ears and you can hear a very slight rubbing sound (in general, freshwater pearls have stronger friction than seawater pearls, and seawater pearls have weaker friction). Примечание: The rubbing should be gentle, a little harder can grind out pearl powder, but not too hard. After that, you can wipe it gently with a professional cleaning flannel to make it leave no trace.

How to identify true and false pearl necklaces

【Imitation Beads/Fake Beads】are plastic round cores, wax-filled glass round cores or round cores ground from shells with plastic film coating. Or apply a layer of pearl-like paint. There are many formulas for this kind of liquid, and it has been improved year by year. В прошлом, the substance “guanine” extracted from fish scales was used to dissolve (or suspend) in nitrocellulose liquid, and then it was improved with aluminum carbonate.的晶。 The crystal. Since it is still the essence of paint, it is not the shingle-like structure of real precious, so when the two fake beads rub against each other, it feels very slippery and does not feel sandy. It can be said that this is the commonality of all fake beads. The fake beads cannot be sanded or powdered. This method is very professional and easy to use, and it will not damage the pearl itself.

Remarks: It is best to go to a professional appraisal agency to appraise seawater pearls. This method of identification is not recommended. I regret it if it is damaged. . .

2. Intuitive method:

【True Pearl】has a natural color from the inside out. There are no two pearls that are exactly the same in the world. In a good necklace, the color and lustre are usually more uniform, but even if the size and color match are more uniform, look carefully at their size, shape or color or skin flaws, you will always find a little bit A little inconsistent. В целом, you can see the flaws or growth textures on the surface with the naked eye (except for the rare flawless Tahitian pearls and South Sea pearls, which are almost invisible to the naked eye). Because they are natural products, they cannot be cast like a machine mold. Absolute standardization;

How to identify true and false pearl necklaces

[Imitation Beads/Fake Beads] The size and shape are the same, most of them are round, with dull and uniform color or vignetting, and the surface often has a mirror-like reflection effect. Однако, the above mentioned points, high-quality pearl necklaces, as long as they are carefully matched, often look basically the same in shape and color, with strong luster and a mirror effect. Поэтому, the pearl beauty believes that the intuitive method requires sufficient eyesight and experience to distinguish. If you still think that the luster of the fake beads is without vignetting and the surface is perfect, then it is out! Фактически, the luster of the craft bead coated with paint is deceptive. It must be carefully identified. In addition to the natural color of some fake beads, it is also possible to see the halo of some paint. Some fake beads are even pressed by a lathe to make The surface creates some natural flaws and textures similar to pearls. Так, how to break through the visual discrimination method? Since fake beads have a layer of oily paint on their surface, they look more greasy than real pearls. Конечно, consumers who are new to pearls may not understand the concept of oily. Then you can look at this method again. If you observe carefully in a well-lit place, you will often see needle-like flaws on the shiny surface, which are very subtle, but you will find that almost the entire surface is covered, which is caused by uneven coating. The effect is that the paint structure is different from the formation structure of real pearls. Only from this point can it be judged professionally, and it looks “fake”. Except for the flaws in real pearls, there are not so many fine needle-like flaws on the surface of other flawless parts. Затем, the flaws of the fake beads pressed out by the machine tool are no different. If the fake beads have flaws, they are not as terrible as consumers imagined and difficult to distinguish. This is often the best place to distinguish, the flaws of real pearls, bumps and scratches In general, the transition is natural and smooth. The flaws of fake beads are often prone to wrinkles, eversion, or uneven dents, which can be seen as scratched by a machine. Поэтому, don’t think that fake beads with flaws are just a lie. It is often the flaws of the fake beads that sell themselves.

 

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