The difference between popcorn crystal and tourmaline
There is a kind of popcorn crystal similar to tourmaline in the market, so people call it "explosive flower tourmaline". The following is about the formation of popcorn tourmaline.
Popcorn tourmaline:
One of the characteristics of tourmaline is that there are more ice cracks inside the crystal. This kind of ice crack sometimes crosses the crystal like a spider web! And this kind of ice crack surface will have a reflection effect, so there is a special kind of broken light inside the tourmaline when it looks! In the Ming and Qing Dynasties, because there were few raw materials for tourmaline, many folk workshops used glass frit to pretend to be a tourmaline, and the pretending technique was to crack the glass frit. The second is to dye the glass that has cracked!
The method of manufacturing cracks for glass in the Ming and Qing Dynasties is estimated to be similar to the present, mainly heating and rapid cooling! And this is actually the method of making the so-called popcorn tourmaline! Most of the popcorn tourmalines are made of glass. They make a lot of cracks in the glass beads, and then dye them to let the color enter the crack! Use this to pretend to be a cracked tourmaline!
In fact, the so-called popcorn tourmaline is artificially cracked, then stained glass! Its texture is generally not a bare stone, but also has no physical characteristics of tourmaline. Things like this are not natural at first, but they are not aesthetic, and the stains are harmful to the human body! So we can say that the popcorn tourmaline is a worthless broken glass counterfeit!
The difference between it and the tourmaline:
The popcorn crystal is called the impotence of the tourmaline. What is the difference between popcorn crystal and tourmaline?
1. The popcorn crystal is heated by crystal or colored glass and then placed in ice water, and then artificially added, processed, several times repeated, screened, and the colors are various. In the market, there are profiteers who use the popcorn crystal as a high-end tourmaline, which is worthwhile for everyone to buy. It is still recommended to pay attention when purchasing tourmaline.
2. The nature of tourmaline is brittle and prone to cracks. At the same time, it contains a large number of inclusions. The presence of a large number of cracks and inclusions will affect the transparency, color and fire of the tourmaline. The inner pure tourmaline is also rare. Top grade. When picking, try to pick the inside clean. Tourmaline requires crystal clear, the more transparent the better the quality, do not have obvious fog or opacity, the higher the transparency, the higher the price.
3. Some of the tourmaline pendants, bead strings and engravings have more internal ice cracks and poor permeability. The merchants will improve the transparency through the injection molding method to cover up some cracks and impurities! High-quality tourmaline will not go to the glue injection process, so generally do not worry about the high-grade tourmaline has the phenomenon of injection molding, but the lower price of the tourmaline may be glued!
Crack formation:
The tourmaline is a crystal that is inherently cracked, and it is common for both primary and secondary cracks! The tourmaline is brittle, so it is relatively easy to damage the bump in the crack! In general, the native crack of the tourmaline is called the ice crack. This crack will destroy the internal refractive path of the tourmaline, so there is no such crack in the tourmaline of the gemstone! However, such cracks are often seen in some engravings. This is because the rhythm materials used in the engravings are relatively coarse, so this phenomenon exists! The secondary crack of the tourmaline will be seen on the tourmaline gemstones and tourmaline carvings, but such gemstones are defective gemstones because cracks can affect aesthetics and durability! Such a tourmaline carving will also be affected!
Cracks, whether secondary cracks or native ice cracks, are a kind of defect. We can't say that it doesn't matter, because the cracks will compromise the value of the tourmaline bare stone in terms of aesthetics and durability! The tourmaline carvings with more ice cracks should be more cautious, because it is a major flaw in terms of aesthetic durability and the rarity of materials.
The popcorn crystal is formed by placing a cracked tourmaline in a colored solution and then immersing the solution through a crack crack into the crystal and then drying the dehydrated sealant. Although it is beautiful, the result is still soaked in a colored solution, which causes the explosion. The price of flower crystal is so low.
Multifunctional sports watch is a watch style specially worn in sports. Compared with ordinary watches, it has better waterproof, shockproof and drop-proof features, as well as practical functions such as air pressure prediction, altitude, heart rhythm, and compass. Therefore, it is deeply loved by the majority of friends who love sports.
Sports watches can be divided into three categories according to the types of their motion sensors: pedometer watches, GPS watches, and heart rate watches. Of course, there are many types of non-professional sports watches.
Pedometer sportwatch
The motion sensor of the pedometer watch is a 3D acceleration sensor, which can sense the three-dimensional motion acceleration generated by human movement, such as walking and running, so as to record the number of steps per unit time. Calculate the speed and distance of the human body through the input step length, and calculate the calories burned through the input weight. Its advantage is that it can be used for outdoor and indoor sports, is not affected by the weather and is very power-saving, and can store several days of exercise data.
GPS sportwatch
The GPS watch calculates the distance moved per unit time by receiving the satellite position signal WAYPOINT, and calculates the moving speed. The accuracy of the position signal is determined by the strength of the satellite signal and the sampling rate. For example, the accuracy of a sampling rate of 1 second is obviously higher than that of a sampling rate of 60 seconds. However, a too high sampling rate will cause the battery to drain too quickly. Its advantage is that it can record the trajectory of the movement and synchronize it to the map.
Heart rate sportwatch
The heart rate watch uses the heartbeat current of the human body to measure the heart rate of the human body. The human body has different levels of heart rate at different exercise intensities. Internationally, the percentage of exercise heart rate to the maximum heart rate is divided into light activities: 50-60%, aerobic exercise 60-75%, endurance training 75-85%, intensity Training 85%-100%. Choosing different heart rate zones can achieve different training exercise effects.
Of course, the above three basic functions can also be combined with each other, such as heart rate pedometer, GPS heart rate monitor and other sports watch combinations.
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