The friends who invested in the South Red Agate are all looking at the old South Red, but unfortunately there are not many old South Red on the market, and more are old materials. With the popularity of Nanhong more and more players, there are more and more fake South Red on the market, which makes many players do not know how to distinguish between true and false. Today, Xiao Bian, China Jewelry Merchants Network, will talk to you about the common tactics of the South Red Agate on the market and the alternatives, and how to ensure that Laonanhong is the real thing. Identification of Laonan Red Agate 1, patina At present, the collection value of the old and the old red agate has a long history. This kind of old South Red Agate has a very small number of deposits. Due to other factors such as the cracking of the South Red Agate, the large pieces of the world, especially in the large folk pieces of the old South Red Agate, are very rare and can not be met. Most of them are mainly small ornaments or pendants such as beads and Lezi. The old South Red Agate has a well-recognized feature that is patina. The patina old South Red Agate will form a layer of patina on its surface after a long period of time, which is very oily and gelatinous. If there is no patina, this old Nanhong is probably the old material, because the old material can not forge the patina in a short time. 2, texture The texture of the surface of the old South Red Agate is also one of its distinguishing characteristics. This texture is formed by long-time weathering, but there are also counterfeiters who imitate this texture, but it is difficult to achieve the same natural natural red agate. Naturally, this point must be carefully identified when collecting. 3, the shape of the hole Some beads, Lezi, etc. are decorated with old South Red Agate. Due to the long time, the tunnel will wear out and become bigger. The natural old South Red Agate hole will be bright, and there will be the same face wear at both ends of the hole. The interior of the South Red Agate is not easy to handle, and there is no such light or patina. And the old South Red Agate is cracked, but this does not affect our appreciation of it, so those old and red agates that are flawless and perfect should be careful. The authenticity of the South Red Agate 1, artificial burnt color The principle of artificially burning is based on the presence of a small amount of chromogenic ions in the agate composition. If only Fe3+ ions are contained, the agate will appear red, and if it contains only Fe2+ ions, it will appear cyan. In nature, the vast majority of agate contains both Fe3+ and Fe2+ ions. Under its oxidizing conditions, Fe2+ can be easily oxidized to Fe3+ by simple heating, which converts the gray agate into red agate. Burnt red agate, also known as the East Red Agate in the collection field. From a sensory point of view, there is a clear distinction between burnt red agate and southern red agate. The burnt red color is not natural in general, and the red color is not only dark and not bright, but also has a feeling of floating on the surface. In terms of texture, since the burnt red agate is made of some light-colored agate, this kind of agate has no unique gelatinous feeling of southern red agate, that is, a sense of grease. This burnt red agate usually has a high degree of transparency and a strong glass feel, which is essentially different from the southern red with warm characteristics. 2, dyed agate Because some of the agate roughs contain high iron content, they turn red when heated, but most agate roughs do not have such conditions. Therefore, it is necessary to first dip with a second iron nitrate or a first iron solution for one month, then soak it with sodium nitrate for about two weeks, then dry it, and finally heat it to make it red. The dyed agate is observed under a high magnification magnifying glass, and it can be seen that the dyed color will be distributed along the interstices between the crystals in a network, not only the glass is strong, but also has no unique fatness of Nanhong. 3, manual injection This is a South Red optimization method that has only appeared since modern times. Such a collagen injection is easier to identify because there is a transparent inclusion on the outer layer and fine bubbles are present. However, the engraved southern red is difficult to identify with the naked eye. However, a closer look reveals a transparent line of fine lines inside. Generally speaking, the transparent lines are relatively straight, and the penetration is long, and some can even run through the whole. This transparent line has a certain difference from the natural texture in South Red, which is produced after the epoxy is filled. 4, feeder This is an instrument that can produce a transparent, translucent or even opaque form of southern red as needed. The biggest difference between Nanhong and natural South Red produced by the feeder is that it is non-greasy, and certain bubbles are visible under the high magnification magnifier. The physical properties of the feeder are brittle and the section is glassy. 5, red stone Red bilith has the name of chicken liver stone, goat liver stone, etc. The composition contains chalcedony of clay minerals and mineral impurities such as iron oxide. The origin of Liangshan Nanhong produces a large number of red birchstones. One of them has a viscous red pebbles and the appearance of the husk is almost identical to that of Liangshan Nanhong. From the outside, it is almost impossible to judge the two correctly. The outer layer of the volcanic red stone, there are also high-temperature oxidized brown or even iron-black leather shell. The size of the block varies from small to large, as well as tens of kilograms of huge rough. The integrity of the volcanic red stone is very good, basically no splitting, and the toughness is higher than that of Liangshan Nanhong. It is difficult to break with conventional strength. The cross section of the volcanic red stone is very strong, showing a sand surface, poor gloss, no fat, and the color is mainly red, with black specks in between. The red stone in the daylight is opaque, and even in the glare flashlight dedicated to jade, the stone is almost opaque. In the Liangshan area, it is generally called red stone, which is a black stone in the proverb. It means pig blood. Children'S Casual Shoes,Boys Casual Dress Shoes,Boys Casual Slip On Shoes,White Casual Shoes For Boys Huaying Shoes Co. Ltd , https://www.qzhuayingshoes.com
