There are ten jade and nine cracks in the jade market, and the ruby ​​also has ten red and nine cracks. This kind of situation shows that jade jewelry made from the natural world will inevitably have some defects, and it will not escape the number of cracks, as is the tourmaline. The tourmaline, which is crystal clear, has few impurities, and is invisible to cracks, is of course very expensive, but the common tourmaline containing impurities and cracks also has a flaw. Talking about the cotton and crack of the tourmaline The tourmaline's cotton refers to the tiny gas-liquid inclusion inside the tourmaline, which is produced during the formation of tourmaline and can be observed with a microscope. These cottons will swell and rupture when the temperature is too low, causing the tourmaline to produce more cracks and become more fragile. Therefore, be careful not to put the tourmaline in a low temperature environment. What is the crack of the tourmaline? As the name suggests, the crack is the crack inside the tourmaline. There are many cracks in the tourmaline. It may be caused by geological reasons during the formation of tourmaline, or it may be caused by mining, or it may be artificially damaged. The cotton and crack of the tourmaline are ubiquitous. After all, it is a beautiful vision to be perfect. But the presence of cotton and crack in the tourmaline does not mean that the tourmaline has no value. It just means that the cotton and the crack are more obvious and the value of the tourmaline is low. And the value of the crack is higher. Cotton and crack are the unique symbols of the tourmaline itself, and it is also the beauty of its defects. Under what circumstances will tourmaline change color? Tourmaline is now a fashionable gem, and it is known as the "Rainbow of the Fall" by its rainbow-like color. Color is the most important feature of tourmaline, and it is also the main reason why it is now loved by the majority of tourmalines. According to the color, tourmaline can be divided into: red tourmaline, green tourmaline, blue tourmaline, black tourmaline, colorless tourmaline, watermelon tourmaline, yellow tourmaline, etc., among which red tourmaline and blue tourmaline have higher value, although green tourmaline has higher yield. The price is lower but it is more popular. As far as the specific tourmaline varieties are concerned, Paraiba tourmaline, rose red tourmaline, purple red tourmaline, watermelon tourmaline, cat eye tourmaline, etc. are more expensive. First of all, after wearing the tourmaline jewelry discoloration, under normal circumstances is a fake imitation of tourmaline, such as coated tourmaline, after wearing for a long time, it will become darker and discolored. In addition, the color of the tourmaline can be changed by artificially changing the environment, such as heating. Heating is a common method in the processing of tourmaline. It is optimized according to the national standard of manual processing of tourmaline. Therefore, it is not indicated in the certificate of identification. By heating, let the tourmaline be around 450-650 °C, the color of the tourmaline will change slightly, such as the reddish-brown tourmaline turns into a red-hot tourmaline, the color of the green tourmaline changes to emerald green, etc. . However, the color improved by heat treatment will not change color during normal wearing. This is often used to judge whether the purchase of tourmaline is a false basis.
Materials: phosphor copper wire (Tin bronze wire)
Property: Non-magnetic, wear resistant, good ductility.
Specification: 2mesh~400mesh, Width: 0.762~2m
Weave: plain weave, twill weave.
Tin Bronze Mesh,Metal Mesh Bronze,Bronze Mesh,Bronze Metal Mesh YingKaiMo Metal Net Co.,Ltd. , https://www.ykmmetalnet.com