Top watch brand why love sapphire crystal What is sapphire mirror? Before answering this question, make sure what is sapphire. Sapphire is the main chemical composition of aluminum oxide, aluminum oxide is originally colorless and transparent, but because of containing iron oxide and titanium oxide and blue. If it contains chromium oxide, it will be called red because it is red. Now the watch installed above the sapphire mirror, in fact, are to remove the iron oxide and titanium oxide and other impurities in the aluminum oxide, chemically speaking, synthetic sapphire and natural Cartier love bracelet replica crystal is no different, because there is no other elements, it is colorless Transparent without "blue" color. Aluminum oxide is made from pure alumina at the same temperature to produce the original synthetic sapphire, which is then cut into discs by a diamond tool and then polished into a mirror. Due to the high cost of processing tools, which is one of the reasons for the higher cost of sapphire crystal. Synthetic sapphire technology was invented in the 19th century, the 1960s has already begun to use on the watch, and now the top watch brands are generally used sapphire crystal. Whether it is natural sapphire or synthetic sapphire, are one of the hardest material on earth, hardness up to Mohs 9 - in addition to diamonds in nature, no more harder than it. Note that here is not in nature, not to say that there is no on earth. Some artificial silicon carbide hardness can reach 9, but also scratch the sapphire. Many buildings, decoration materials are also used in silicon carbon compounds, such as artificial stone, etc., so in these places if the friction is likely to leave scratches on the sapphire crystal. Cartier flying tourbillon watch "Young and Dangerous Raptors across the river" inside, pheasant used to bluff the false Rolex will be a shot that is broken, really Rolex will not be so. This is also due to sapphire hardness, made of sapphire watch, its shock resistance, sealing and strength than other materials. And from the current watch industry point of view, although higher than the sapphire hardness, even higher than the diamond material is also emerging, but both from the cultural point of view, or from the watch industry investment direction and scale Look, in the foreseeable future, sapphire mirror is still a top watch an identifier, is still a top watch quality of a factor. On the watch mirror a number of "do not know": With a plexiglass table watch has a collection of value? If you want to collect an antique table, it is likely to be a plexiglass table mirror. But if you want to collect a new Cartier love ring replica table, be sure to choose sapphire crystal. Many collectors prefer the surface of the subcritical mirror. This is because the acrylic mirror is curved, so the case can be made thinner and does not affect the movement of the pointer. However, plexiglass is easy to be scratched, only a year, plexiglass on the mirror above can appear a lot of small scratches. LV Voyagez Tambour Chronograph Sailing Line Timer Sapphire Watch Mirror Is not it better? Yes. It will not be scratched. Sapphire is very hard, is the inevitable choice of top watches, such as all the new production of Rolex are sapphire crystal. But, like glass, it is brittle and easy to break. Therefore, this sapphire mirror once broken, then the resulting maintenance costs will be very expensive, because the watch division in the replacement of the lens before, must be carefully checked to ensure that the movement did not leave sapphire. In addition, it is a powerful fingerprint collector, FBI favorite. Can I change the plexiglass mirror to a sapphire watch? Can not. Because the thickness of the case is not the same. Normally, sapphire mirrors are thicker than plexiglass tables. Maybe you can find the right size sapphire crystal, but this will also damage the watch's waterproof performance. In addition, the result of this is that many manufacturers will refuse to provide maintenance and repair for your watch. How to identify three kinds of material mirror? First of all, you can tap your eyes with your fingers and listen carefully. Acrylic mirror will be issued as a plastic sound, and the sound of the glass is thicker. Second, you can judge from the weight point of view, the most light acrylic, sapphire mirror the most important. As the sapphire thermal effect is very good Replica Cartier love bracelet, so when you touch the time, there will be a sense of cold. As the sapphire mirror than the other two kinds of material mirror smooth, so if you drop a drop of drops on the sapphire mirror, the water droplets in the above is not easy to spread, and other materials will be scattered into one. "The most reliable way to do scratches is testing," said Johann Jorgo, New York's technical director at Baume & Mercier. "If this is not realistic," you can take a stainless steel knife or a screwdriver To see if there is any scratches.