Jewelry market is very valuable crystal treasures, boutique, and pass off the sham as the genuine imitation crystal products. Imitated crystal or glass products. If the instrument detecting the absence of true and false recognition is a very easy thing, however, consumers can’t take the instrument to buy crystal, to master some simple identification method is very important, so as not to be deceived.
One. crystal ball, is still a glass ball crystal ball high ornamental value, so the price is very high. A 10 cm above crystal ball, the value of million to several hundred thousand yuan. As a result of economic interest drive, unscrupulous businessmen to get sudden huge profits, holding the glass ball as crystal ball is. In fact, whether it is a crystal ball or ball glass eye identification is very simple and reliable. As long as the hair is placed on a sheet of white paper, the ball pressure in hair, constantly rotating sphere and sphere observation by hair change, was found to have hair double for the crystal ball, if turn in any direction were unable to see the hair double for glass ball. This is because the crystal with double refractive index while the glass is amorphous body only refraction.
Two, crystal necklace or the glass chain jewelry market often encounter glass necklace, glass necklace commonly have two types, one is the glass mold, a glass after cutting and processing. The naked eye identification is crystal necklace or glass necklace, often take a try, two see. A try is the necklace affixed to the face test temperature cool feeling, glass by heat slowly, he soon felt warm feeling, and crystal because of the fast heat conduction, so with a cool feeling. In two, the first look at the jewelry internal if bubbles, glass has a generally spherical or elongated bubble. Similar to being mixing viscous liquid bubbles appear, then see whether there is flow line, a flow line for glass. The flow line is composed of a molten body of glass in the cooling process or other interference factors and the formation of a phenomenon, a viscous flow syrup on mercerizing effect. Molded glass products, its surface is often not too smooth, not smooth and saw the impression marks. If there is a piercing words, the hole is smooth, the ends of a concave hole of common. If the apparatus from an optical point of observation and analysis, natural crystal necklace as a shaft is light, stand in the sun, releasing be riotous with colour light, no matter from which angle, it can radiate a beautiful luster, false is not. If from physical and chemical analysis, natural crystal, its degree of hardness, density, refractive index and a fake crystal necklace has bigger difference. Natural Clear Crystal Beads hardness 7, refractive index of 1.54; while the fake hardness only reached 5.20-6.10. refractive index less than 1.00. if from pure degree on look, false high purity, natural crystal have different degree of fullness and different colors etc.. Natural crystal necklace, it seems that the surface is coated with a layer of thin oil, was blue. Fake is not, like glass.
Three, crystal glasses or glass glasses crystal glasses and glasses each piece, clean (must be clean ), and then with a match stick or toothpick dipped in water, in the lens respectively drop a few drops, droplet diameter of about 1 mm or so, in the same environment temperature observation, if glass glasses, then the water will spread, if it is crystal, then the droplets retain spherical. Crystal water natural dry faster than glass lenses to almost doubled. This was soon put the glass and crystal lens separated. The reason is that the glass is an amorphous body is crystal, crystal, surface tension and coefficient of heat conductivity is not the same.
Four, is a crystal stone or imitation crystal block crystal stone trading market, often useful glass block as crystal stone for sale. There are three cases, one is the glass blocks by cutting and polishing into the six prism as crystal single crystal sold; a glass block, surface by artificial processing, pit pit, and iron oxides and soil contamination, the treated surface often open a window, visible through the window of the internal pure. Encounter the situation, to take a stand, two row, three see. It is called, in the hand. Under the heavy feeling, because crystal glass ( except glass than lead ), heavy feeling is crystal, light sensitivity for glass. The so-called plan, is to use crystal carved crystal block, can carve mover for glass, this is because the hardness of glass crystal hardness to the small of it than. The so-called, is to see whether there are bubbles or flow structure, there is glass. Through the above method can usually distinguish.
Five, Amethyst or purple Fluorite Crystal Stone trading market, common people use purple Fluorite Crystal family posing as amethyst sales, and the price is very high. When you use a pocketknife equalize, can immediately identify. Fluorite Mohs hardness of 4, knife can carve, crystal hardness 7, never move knife.
Six, Aquamarine crystal or glass has a less adept jewelers, jewelry business in Xinjiang, spent 4000 yuan to buy a ” Aquamarine ” crystal, the crystal is very complete, very beautiful color, can be called a goods. However, when observed carefully to find the crystal surface grinding polishing scratches, but within the crystal found 3 spherical bubbles, use a magnifying glass to observe bubble wall smooth clean, initially considered not aquamarine. After testing proved with Aquamarine glass processing grinded into a faux blue sapphire single crystal. In seven, is the emerald ring surface or glass ring face a collectors, took out a diamond ancestral jade ring surface ( surface type) to identification, just saw is the sense that gives a person is a high quality jade jewelry. But look carefully found the ring in the center of the bottom surface, have a smooth concave, the circular slide surface is smooth and other local gloss is not the same ( sleek office without polishing ), the naked eye identification for glass products, after the instrument detection proved to be a green glass ring. Jewelry market has what kind of natural gemstones have what kind of imitation jewelry market, so pass off the sham as the genuine phenomena occur, so consumers to buy Clear Crystal Beads, carefully, so as not to be deceived.