Top Sapphire Glass Identification Method

Sapphire is the general name for corundum gemstones other than red rubies among corundum gemstones. The main component is alumina (Al2O3). Blue sapphire is caused by a small amount of titanium (Ti) and iron (Fe) impurities mixed in it. Sapphire has high hardness, and watches made with it have higher shock resistance, tightness and strength than other materials. At the same time, this is also an important factor for the quality assurance of top watches.
What is a sapphire crystal?
The sapphire mirrors currently installed on watches are actually alumina trioxide with impurities such as iron oxide and titanium oxide removed. Chemically speaking, there is no difference between synthetic sapphire and natural crystal, and it is colorless because no other elements are added There is no ‘blue’ color for transparency. Aluminum trioxide is made from pure alumina at high temperature into original synthetic sapphire, which is then cut into diamonds by diamond tools and then polished into a mirror. Due to the high cost of processing tools, this is also one of the reasons for the higher cost of sapphire crystals. The technology of synthetic sapphire was invented in the 19th century. It has been used in watches since the 1960s, and now the top watch brands generally use sapphire glass.
好 What’s so good about sapphire crystals?
First, it will not be scratched. Sapphire is very hard and is an inevitable choice for top watches. However, like glass, it is more brittle and easily broken. Therefore, once this sapphire mirror is broken, the resulting maintenance costs will be very expensive, because watchmakers must carefully check to ensure that no sapphire debris is left in the movement before replacing the lenses. In addition, it is a powerful fingerprint collector, so it must be wiped frequently to make it shine. Whether it is natural sapphire or synthetic sapphire, it is one of the hardest substances on the planet, with a hardness of up to 9 Mohs. In addition to diamond in nature, there is nothing harder than it. Note that what is said here is not in nature, not that it is not on earth. Some man-made silicon-carbon compounds can reach a hardness of 9 and can also scratch sapphire. Many construction and decoration materials also use silicon carbon compounds, such as artificial stone, so if there is friction in these places, it is possible to leave scratches on the sapphire glass.
Can I change the plexiglass watch to a sapphire watch?
I can’t. Because the thickness of the case is different. Under normal circumstances, the mirror surface of sapphire is thicker than that of plexiglass. Maybe you can find the right size sapphire crystal, but this will also destroy the waterproof performance of the watch. In addition, as a result of this, many manufacturers will refuse to provide maintenance and repair for your watch.
How to identify the sapphire crystal?
1. Breath method
I took a sigh of relief on the surface, and the mist was quickly spreading out of sapphire crystal glass. Generally, when you remove your mouth from the top of the glass, the mist spreads out. When you look at the surface, the mist is no longer visible.
2. Light tap method
Use your nails to gently tap the surface, remember that it must be light, it is likely that the fake will break, then you will not be compensated if it is dull, the surface is sapphire crystal. Crystal or glass, the sound is more crisp.
3. Drip method
If possible, put a drop of water on the surface, and then erect the surface. The water droplets will not spread out, and they will slowly fall. It must be slow, very slow, this is the sapphire crystal.
How to identify the three materials of the mirror?
First, you can tap the mirror with your finger and listen carefully to the sound. Acrylic mirrors sound like plastic, while glass sounds thicker. Secondly, from the perspective of weight, the acrylic mirror is the lightest and the sapphire mirror is the heaviest. Because sapphire’s thermal conductivity is very good, when you touch it with your hands, you will have a cold feeling. Because the mirror surface of sapphire is much smoother than the mirrors of the other two materials, if you drop a drop of water on the sapphire mirror, the water droplets will not spread easily, and the other materials will be scattered.