In the eyes of friends doubt, I with forceps between the single his "pearl", with lighter incredibly to light, take up smoke, and the same test my necklace of pearls, but just outside black, not burning, after wiping glorious still. I told a friend, in fact the beads will at once know that it is fake, because the particle size is surprisingly consistent, pearl also difference.

Pearl for traditional rare Chinese traditional medicine, it is precious ornaments, adulterate faking is serious.

Pearl class ball, oblong, ovoid or bar, diameter 1. 5 ~ 8 mm. Surface kind of white, shallow pink, pale yellow green or light blue, translucent, smooth or micro has concave and convex, with brilliant colour gloss. Qualitative hard, the broken surface show proper alignment layer lines, some center being a little foreign body. Odourless, taste light.

1. Inferior good grain shape of small, round, rough, color dim, broken section after lack of layer grain, pearl layer thin, kernel predators, quality time.

2. WeiPin common WeiPin are:

False Newport bead size with pearl, the surface white, with a few sag small point, show metal sample luster, stay dark without luster. System artificial processing is made, pearl layer as a toxic lead compounds. Set on the fire burning, the surface gloss immediately into to black.

Mother of pearl processed products most kind of circular, oblate, particle size relatively uniform. Diameter of about 2 ~ 4 mm, surface white, show metal sample luster, stay dark without luster. Break or fire explodes and the visible to section present a miniature imbricate layers of the, but without proper alignment layer grain.

Shell, calcite and processed products have a flat drum, short cylindrical, irregular surface shape or nearly spherical, there is one side or two sides flat, size is differ, the surface of white or yellowish-white, slightly rough, micro show pearl. The burning not burst, the surface show to black, embers flat in block or of fragmental.

Pseudo pearl will foreign material processed into larger round grain, vaccination in ZhenZhuBeng, after a short time, foreign body surface parcel pearl layer, remove and form so-called big and bright and clean and "pearl". Shape with natural pearl similar, but the surface gloss is weak, the section of central are round sand or haliotis granulated, the surface has a thin nacre.

3. Imitation general with glass, plastic as raw material, as a process of pearl products, rarely into the medical market.

Identify pearl Jane method

1. Pearl shapes, have natural rainbow beads light and metal sample luster reflection, so each pearl luster have distinction. Artificial bead shape uniform, pearl dim.

2. Pearl rub against each other after acerbity feeling, and glass friction still have acerbity feeling. False ball rub against each other after smooth feeling, false bead and glass friction also have smooth feeling.

3. Pearl touches the skin has the cool feeling, with the mouth to pearl breathe out, the surface will appear aerosol form. False bead touches the skin has smooth feeling, warm.

4. Pearl with small fire burning, appearance will be black (ash), wipe the glorious still, big fire, have crackle, natural pearl is cultured pearl crackle is strong, lobes for countless thinner arc small pieces, silver, and accompanied by colorful luster, and its peripheral translucent shape. Artificial bead shape uniform, he burnt with fire will be scorched, have plastic smell, and ashes is flat shape or of fragmental, the color black matt.

5. Pearl set banana water for a few minutes, vibration wave, the brilliance is not reduced. WeiPin in banana water slightly vibration wave, a few minutes surface gloss falls off entirely, the rest of the bead body has milk-white, or is white color, translucent shape, matt, some show fine parallel texture, some visible small concave point or circular holes.

6. Similar weight pearls, from 60 cm high free falling in the glass plate, sea water pearl jumping height can reach 15 ~ 25 cm, fresh water pearl can reach 5 ~ 10 centimeters. WeiPin because added coating layer, free falling in the glass plate, jumping height is low.
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