Some fans asked Xiaobian in the background, "How can I buy lapis lazuli without dyeing?" The problem of dyeing lapis lazuli is indeed rampant, and many people are deceived. After the South Red Wax Wax has been hot, the lapis lazuli has become a dark horse in the jewelry industry. It is because of the popularity, the phenomenon of falsification is endless, and the dyed lapis lazuli, especially dyed with chemical dyes, can also cause harm to the body. It is terrible! In response to the various frauds of lapis lazuli, today Xiaobian will tell you about the method of discriminating the green gold. Maybe you will be able to practice the next time you buy a jewel. Fraud dyeing The lapis lazuli has a unique blue color, not as dark as dark blue, nor as fresh as the sea blue. The blue color gives people the feeling of being rich and rich, and also very bright. Nowadays, there are very few good materials for Qingjin, many of them are with Venus (pyrite) or white calcite, which looks uneven in color. Therefore, dyeing these poor quality lapis lazuli into a good color has become a common method of fraud. There are two types of dyeing and shamming, one is dyeing with organic dyes for dyeing clothes, and the other is dyeing with inorganic chemicals. If the falsification means is superb, it is difficult for the average person to distinguish it with the naked eye. Discriminating method: 1. Observe the crack of the lapis lazuli. You can use a magnifying glass and or a flashlight. If the crack shows a deep blue deposit, it is mostly traces of dye. The natural lapis lazuli crack is mostly light blue. 2. Repeat the rubbing of lapis lazuli with alcohol. If there is any discoloration, then unfortunately, you must be taken medicine. Also note that there are now many profiteers who will brush the surface of the dyed lapis lazuli. It is best to put the lapis lazuli in hot water before wiping. Fraud II synthetic Using a synthetic lapis lazuli synthetic material, adding pyrite flash crystals during the falsification, the lapis lazuli particles are fine and realistic. There are a lot of lapis lazuli in the market that are synthetic. If you look closely, you can still see if you look at it. Discriminating method: 1. Because the pyrite in the synthetic lapis lazuli is processed, the glittering crystals are evenly distributed in the lapis lazuli, while the pyrite on the natural lapis lazuli is irregularly plaque or strip. 2. The synthetic lapis lazuli grain structure is more delicate than the natural lapis lazuli. In addition to the rare products, many lapis lazuli colors are not uniform, but the synthesis is very uniform. This is a detail. 3. Natural lapis lazuli color sapphire blue is transparent, while synthetic lapis lazuli is opaque. Fake three Injection Glue injection is generally a poor quality lapis lazuli, processed with blue glue to cover the surface of the lapis lazuli. Some people also dyed lapis lazuli, so that even with the decolorizing agent can not make it out of the original shape, the fake high-definition, even the surface of natural calcite and pyrite are particularly natural. Discriminating method: Observed with a magnifying glass, the surface of the glued lapis lazuli will not feel very smooth, there is a resin feeling, and some rubber aging will leave traces in the crack. Another point, when you buy lapis lazuli, pay attention to observe the punched lapis lazuli. If the hole is large, there is suspicion, because the quality of the lapis lazuli punched the assembly and the stone is damaged and cracked. The materials are processed very delicately and the holes are not too big. In fact, the lapis lazuli fired a long time ago. At that time, it was the special favorite of the ancient emperors, and it was a symbol of wealth status. The nobles and the nobles were rushing to wear it! It is beautiful and rare, and it has an important place in the jewelry market.
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