wholesale jewelry from www.bjbead.com

China (SANEPR.com) December 31, 2008 -- Pearl valuable traditional Chinese medicine, but also a precious ornaments, adulteration rampant fake.

Pearl-type ball, a long round, oval or rod with a diameter of 1.5 to 8 mm. Surface-type white, baby pink, light blue or green light yellow, semi-transparent, smooth or a slight bump, a color glossy shine. Quality hard, broken face significant layer of concentric patterns, and some centers have a small foreign body. Odorless, tasteless.

1. Lie Zhipin small tablets, not the shape of a round, rough, bleak colors, broken after the lack of cross-section pattern layer, thin pearl, the core large, poor quality.

2. Pseudo common counterfeit goods are:

Newport leave with the size of the pearl beads, a white surface, with a few small depression, significant metal-like luster, no glory to stay hidden. Artificial processing system made for the Pearl layer of toxic lead compounds. Home fire burning on the surface immediately into a shiny black ash.

Mother of pearl products most of the round, flat circle, relatively uniform particle size. Diameter of about 2 to 4 mm, the surface of white, a significant metal-like luster, no glory to stay hidden. Smashed or burned open explosion can be seen showing a cross-section review of micro-tile-like arrangement of the film layer, without the layer of concentric patterns.

Shells, more processed products, such as calcite Chengbian drum-shaped, short cylindrical, irregular multi-faceted, or nearly spherical shape, flat side or both sides, large and small, white or yellow-white surface, a little rough, significant micro-pearl. The fire did not burst, marked on the surface of black ash, embers were flat or block Chunky.

Pearl pseudo-foreign body will be processed into higher Yuan Li, vaccination in the pearl mussels, after a relatively short time, foreign body surface parcel out after the nacre, forming the so-called big and bright and clean "pearl." With the shape similar to natural pearls, but weak on the surface gloss, has a circular cross-section of the Central or the sand Concha haliotidis nibs, the surface of a thin layer of nacre.

3. General imitation glass, plastic raw materials, the Pearls as a technology products, very little into the medicinal market.

Jane Pearl identification law

1. Pearl different patterns, natural iridescent pearl-like metal and shiny reflection, so each has a shiny pearl of the difference. Man-made uniform shape beads, pearl bleak.

2. Pearl friction with each other after the astringent sense of friction with the glass still have a sense of Shibuya. Zhu leave each other after friction smooth feel, with glass beads leave friction is also a sense of smooth.

3. Pearl touched skin feel cool, Oh Pearl gas to the mouth, on the surface appears gas mist. There are touch beads leave skin smooth sense of warmth.

4. Pearl burning low heat, the appearance will be black (soot), polished luster is still, the fire, there are sound burst, as well as natural pearls cultured pearls than the sound burst, split for the thin arc of countless small pieces, silver Gray, accompanied by colorful luster, and its periphery were like translucent. Man-made beads uniform shape, will be burned by the fire, the smell of plastic, ashes were broken or block-shaped, black matte color.

5. Pearl buy bananas for a few minutes in the water, Zhen Yao, reducing glory. False banana in a little water Zhenyao, a few minutes all the surface gloss off the rest of the beads lanes are white, yellow or milk clean white, like translucent, matte, and some significant degree of parallel texture, and some can be seen pit Or round holes.

6. Similar to the weight of the pearls from 60 cm high degree of freedom fall on the glass, the sea water pearls jump up to a high of 15 to 25 centimeters of fresh water pearls of up to 5 to 10 cm. Because of the increase in counterfeit coating layer, a free fall on the glass, the lower jump height.
www.bjbead.com engaged in wholesale jewelry,handmade jewelry,fashion jewelry,handcrafted Jewelry,jewelry wholesale,fashion jewelry wholesale,unique handmade jewelry,handmade pearl jewelry,handmade turquoise jewelry,handmade semi-precious
jewelry,fashion cystal jewelry,fashion swarovski jewelry wholesale,handmade coral jewelry,handmade shell jewelry.welcome to visit http://www.bjbead.com