Needle Genuine

Needle Genuine

Between genuine and fake pearls good or bad

 

First. identity. The shape of the pearl, the shape is different, the value of different identities is the highest fine bead, the United States because of its shape, use wide, applies to all gold and silver ornaments, such as rings, earrings, pins, necklaces.
Second, light skin. Skin thickness with the extent and degree of reflection. Required the higher the better light skin, eye-catching are the best crystal. Paper thin and smooth the signs are: facing the china gemstone wholesale smooth pearl shine in its own image in the eyes can see Tong Ren.

Third, the color. White, pink, yellow, red, purple, blue and so on. General Micro-white through pink who is best known as "The Drunken Beauty"; very white pearl is also an invaluable Run, known as "Shin Chu."

Fourth, the size. Greater preferred. As the saying goes "seven beads eight treasure", that is, seven heavy as pearls, and eighth of the weight of the pearls on a Baozhu child. Difficult because the force was great, worth can be doubled.

Five pairs. Among the many pearls, the required color, light skin, all the same size, are rare things, so matching pairs were worth the high.

The difference between true and false pearl

Observe the appearance of cultured pearls wrapped thin and more transparent, to help the surface has a waxy luster. Wash the empty string to wear pearls and a bright light, and carefully observe the hole with a magnifying glass, the culture beads, in large core and thin outsourcing can be seen between the clear dividing line. Often a black line blot, it is easier to see. For natural beads, fine growth lines will always be evenly discharged to center, only close to the center or more brown color than the yellow.

For clusters of pearls, can be solved linked to straighten the rope necklace, in the strong light irradiation slowly rotating beads. For breeding beads, go to the right angle, it will surely see the reflection of the flash cue ball core, the general flash twice to 360 degrees, which generally is to identify evidence of cultured pearls. Pearls can also be facing the light, observe its translucent internal beads for cultivation, may be seen in the inner core of the ball lined parallel, transverse rows of thin outsourcing. Sometimes can see the dividing line between the jacket and endothelial. If it is natural beads, visible light transmission of the edge to the center of Pearl gradually weakened. In order to observe the effect, jewelry supplier and can be prepared an opaque plate, dug the holes with a diameter of about 1mm, the first block with a shield to Jane, only to let the small pinhole in the strong beam reach all parts of pearls, so that observed most clearly.

Generally do not change the color of the pearl color, if seen in some rare gray and black, black pearl, it should arouse vigilance. It might be dyed. Staining method is now known, the pearl silver nitrate solution into the soaking, remove and put in strong sunshine drying, which turn black. Difference is; the natural black pearls are not pure black, but slightly rainbow flash of deep blue black, or was black with a bronze tone. Man-made counterfeit or fake pearls (also known as imitation pearl), manufacturing methods are generally three ways:

Waxed Glass imitation pearl white in the hollow circular glass ball full of paraffin. This imitation bead density, generally low 1.5g/mm3 hand can be a difference between Dian. Useful in fine-needle probe inside the ball with soft feel, the outer pin engraved fixed, smooth surface. Solid glass imitation pearl white solid glass ball to soak in the "pearl of semen" in the made. With 15 times magnifier be observed in the drill, only see a thin layer of "pearl of semen," the thin needle into the film will toggle off but not the small scale-like powder.

Plastic imitation pearl in white plastic coating plated with a thin layer "pearl of semen", china jewelry wholesaler observed with a magnifying glass coating was uniformly distributed papules-like, than natural or cultured pearls as real smooth paste. Provocation with a needle, into the film off but not the small powder.

Imitation pearl beads because it is thick shell formed on the polished nacre, density, and no significant difference between real pearls. The best way to identify it is to put it before a strong light source, often in the transmission of light to see its obvious parallel bands, which is layered pearl powder traces.

 

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