Raisin agate I don’t know if my friends have heard it, know how much. Recently, a news about the "raisin" agate on the Internet has attracted the attention of many collectors. Some people say that it is extremely scarce and expensive. Is the truth really like this? The reporter visited the collectibles market last week and found that the so-called "raisins" are only agates with smaller particles. The experts explained that the "raisins" agate is the most marginal material and belongs to the ornament.
The so-called "raisin agate" is worth only "cabbage price"
When it comes to raisins, everyone is familiar with food and will immediately think of food. Recently, small particle agates shaped like "raisins" have appeared in the northern collectibles market. Some people even call them extremely scarce. Any string of prices will cost more than 10,000 yuan, and the most expensive ones will cost at least 2,000 yuan each. Is the truth really like this? After interviewing several major collections in the city last week, the reporter found that this thing that was suddenly held up in the sky was not known to anyone. In the face of reporters' questions, most businesses shook their heads and turned to sell Madagascar and "South Red" agate. "This so-called "raisin agate" was not worth the money before. The sellers in Inner Mongolia will use a sieve to screen out a variety of small stones, and then use a pile of tens of dollars. The "cabbage price" is sold to the acquirer." The old stone player Li, who often travels around the country, told reporters that "raisin agate" certainly has very good treasures, but overall, its value is far better than no A large piece of strange stone. "Because nowadays there are fewer and fewer boutiques, some people have only a few scraps left in their hands, and they begin to "tell the story" to create momentum, and hope to stir up the small materials."
In the exhibition hall of the senior Kistler collector Zhang Xueke, the reporter saw a few strange stones that look like a bunch of grapes: "This piece is produced in Inner Mongolia Alashan League, and the green piece is imported from Africa. For real experts. Only this kind of strange stone has become the "grape" agate, which belongs to the top grade in the Gobi stone, and the value is relatively high. The "raisin agate" that is hot on the Internet may want to hit the edge ball." He said that the small particles of agate Can be used as accessories, belonging to the mass consumer goods, facing ordinary people, and "grape" agate is the star of the strange stone world. "People who play Kistler are pursuing natural beauty. The small agate stringed into beads must be machined, naturally not suitable for senior players. Taste."
"Grape" agate and "desert paint" are the Gobi stone stars
The collector Li Nianci said that agate is one of the traditional gemstones, and the boutique is more expensive. With the development of the economy, the accumulation of people's wealth and the scarcity of resources, the boutiques in the Gobi stone began to increase sharply. "A lot of Guangdong buyers went to purchase a large number of Gobi stones in a thousand miles, and then loaded them back in one car. The truck loaded with a load of 8 tons is about 40,000 yuan, and now a large piece of grape agate must be at least several hundred thousand yuan. Because the price difference is too big, the seller who used to shoot the grass can’t help but hate it. They went to Guangzhou and even overseas to increase the price of the previously sold Kistler. After several rounds of carpet-style "sweeping", they got back a large number, and the rest were scattered in the hands of collectors and would not be sold easily."
Li Nianci believes that Fanci Stone is almost the first to be discovered and mined. The best color and highest value are because its selling point is that the surface is eroded by air, water, etc., and strange changes occur constantly. There are few treasures in the stone that are buried in the place.
The reporter learned that in addition to the "grape" agate odd goods can be outside, the other star in the Gobi stone will count "desert paint." Why is it so strange? Zhang Xueke pointed to a stone with a yellowish appearance but a rounded luster. "Because the Gobi area is very dry, the mineralization in the underground water is very high. In addition to various salts, the aqueous solution also dissolves high concentrations of iron oxide and manganese oxide. Due to the high salt content, the water is blocked by gravel that stays on the ground when it evaporates, and many dew-like water spots are formed on the bottom of the gravel. The stones in the desert are dry and have strong absorption, and the geological conditions are not the same everywhere. Some minerals only stay on the surface of the stone, and some go deep into the stone to form various patterns such as lakes, landscapes and various biological shapes. Therefore, some stones have beautiful surfaces, and the inside is very dull, and some of them are not good. After the separation, there is a good thing inside." It is reported that the "desert paint" carrier mainly includes slate, limestone, granite, volcanic rock, agate, jasper, opal and so on.
Identification of filler falsification: fire roasting, knife scraping, needle digging
The agate color produced by Alxa League is especially precious in red, yellow and green, and it is highly popular with collectors. It is cooled by magma ejected from volcanic eruptions 8 million to 100 million years ago. After long-term geological changes and solar wind erosion, it has formed a strange and colorful Gobi agate, which is both restrained and restrained. On the one hand, there is also a bold and bold style. “In fact, places with developed geothermal resources (with volcanic eruptions and hot springs) usually have agate, yellowstone, etc., because they are formed after the lava eruption, especially the quality of the seed material, because in the water, the mine The substance is easier to penetrate," Zhang Xueke said.
As we all know, the investment value of Kistler depends to a large extent on the natural properties of Kistler, and it is the nature's ingenuity rather than man-made machines. However, with the attention of the ornamental stone market in recent years, some unscrupulous businessmen began to falsify for profit. Some use artificial carving of tools, and even others will use chemical materials to soak or inject some filler into the artificial stone to impersonate natural stone, and form a scale benefit. Lao Li said that such as injection molding, it is often used in the forgery of small high-grade ornamental stones such as agate, gravel and stone. Some people use the mixture of polyester, dye, high-concentration glue to the surface of the stone. The position of the defect is glued to add color to the artificial stone.
Reporters searching for Baidu and Taobao have found that synthetic products such as resin defoamers, curing agents, accelerators, and agate powder are sold online, ranging from a few thousand yuan to 10,000 yuan per ton. "This product is a better filler for the production of artificial agate products. The agate products produced with it have high brightness, strong jade feeling, smooth surface, abrasion resistance and impact resistance." According to industry sources, the so-called agate powder is actually aluminum hydroxide, used as a filler for solid surface materials (artificial marble, artificial agate stone, artificial imitation jade). It has low viscosity when filled in resin and fast at room temperature. He said that consumers can use fire roasting, knife scraping, needle digging and other methods to identify. "A piece of strange stone has eighty-nine points like a real thing in life, even if it is a boutique, because it is always necessary to play the human synaesthesia to associate. If you encounter the same thing as the real thing and the real thing, then you should pay more attention to it. It’s really a treasure, or it’s being fooled.â€
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