Tourmaline, known as "Colorful Supreme", "the rainbow that fell into the world." Unlike ordinary jewellery, in addition to its eye-catching ornamental value, tourmaline has a unique effect due to its special electrical bisexuality. Tourmaline is undoubtedly an indispensable piece of jewelry for women. But is the most common optimization process in Tourmaline, which makes you a headache? The colors are very beautiful, can you believe it? One of the characteristics of the tourmaline is that she is rich in color, the more beautiful it is, the more beautiful it is, and the more popular it is. Therefore, unscrupulous merchants always use the consumer's mentality to make some small hands and feet on the tourmaline, take advantage of the opportunity to obtain greater benefits, and do not want to be deceived, you must remember these methods of identification. Means 1: Dyeing Commonly used in red, green, and blue beading, the light color is generally dyed dark, or the colorless is dyed into a color. It is usually found in red, and now green and blue appear. Discrimination method: Note that the dye in the crack is enriched and precipitated, and the naked eye and ten times magnifying glass are sufficient. Means 2: Heat treatment Basically, the dark color is processed into a light color. The national standard for this optimization method is not indicated, but we can see it. It is said that Europe can treat green tourmaline into light blue-green, reaching the standard commonly known as "Paraiba", and the price is even higher. Discrimination method: Observe the original gas-liquid inclusion under ten times magnifying glass. Almost 40% can see the radial whisker pattern on the edge of the inclusion. In addition, the multi-color and two-color tourmaline color transitions will appear similar to the wave effect. It seems that there is a feeling of nearsightedness to see things! Method 3: diffusion treatment This should be the latest proposed method. The earliest appearance of the tourmaline in Africa is usually found in the blue tourmaline, which diffuses the light-colored surface into a dark color. Discrimination method: Note that there is a burst in the tourmaline when the heat is uneven, and the edge color can be seen deeper than the middle in the water. Special means: irradiation treatment More common in the Afghan region, the tourmaline, light green, light blue-green (Palaiba) should pay attention to, as well as the treatment of pink into a deep red. Discrimination method: This test is a bit difficult, and the naked eye will give up, and the instrument should be tested. The tourmaline I want to buy looks good and shines. Is it normal? Because the surface of the tourmaline is glassy, ​​the effect visible to the naked eye is generally only the cat's eye effect. If you look at the cloud effect, the rainbow effect, etc., you should consider whether it has any problems. Means: film treatment The surface of the alumina coating, visible halo effect floating on the surface, which is easy to detect, but now another film is blue, relatively shallow, the overall color is similar to aquamarine, easy to see. Discrimination method: pay attention to the film can basically find the halo Say good tourmaline is fragile and cracked. The tourmaline is rich in inclusions and has strong fissure development. Although the Mohs hardness is 7-8, it is brittle, which has become a pain in the processing of tourmaline. It should be very careful even in daily wear. In the processing of semi-precious stones in the general factory, in order to avoid the cracking of raw materials and increase the yield, the glue is filled before cutting, and its function is to increase the adhesion and increase the transparency. In this way, in order to reduce the cost and increase the yield, almost all tourmalines will have a glue before cutting. Good quality tourmaline does not need to be filled, and optimization will reduce the value of tourmaline! Note: Filling materials are divided into two categories, organic matter and glass; subdivided into colorless rubber, colorless oil, colored rubber, colored oil, colorless glass, colored glass. Mode 1: in beading and carving This is easy. Observe the difference between the gloss of the surface and the luster of the filling. The filling can be filled with open cracks. Watch it! Mode 2: Common in the face The key is the vitreous body. This is almost all colored glass filled with open cracks. Generally, it is noticed that the tourmaline will appear blue during the shaking process. The blue-violet flash state should be noticed. The original product is mostly red and deep. The red one, now including yellow, has a phenomenon of filling the glass. But there is still a lot of red crimson, so you must pay attention when buying! In fact, all of the above are simple detection methods for tourmaline. In fact, the safest method is to buy a gemstone with a certificate. Some of the tourmaline's optimized treatment cannot be detected by the naked eye. Mens Solid Shirts,Mens Solid T Shirts,Solid Casual Shirts,Solid Cotton Shirts Shaoxing Shanhe garments co.,ltd , https://www.sx-sanhe.com