Agate has always been a favorite of Kistler and Amy. The agate is good, but the market has always been filled with a lot of fake agate, which is mainly synthetic agate, glass, plastic, stone, etc., although it The texture and color are comparable to natural agate, but they are not collectible. So what kind of agate has value? Experts say that agate pays attention to the level, strengths and weaknesses and true and false.
Agate is actually good or bad. From the texture point of view, the general quality natural agate has glass and oily luster, the natural pattern is bright and bright, natural and pure, smooth and smooth; the texture is natural and smooth, the most important is the gradient on the agate. Its color is distinct, the layering is strong, and the strips are obvious. The quality and luster of the quality agate are both worse. Usually the color of agate determines its appreciation potential. All grades of agate are best in red, blue, purple and pink. The color should be translucent and should be free from impurities, sand and cracks. From the point of view of the production process, the natural agate stone is hard, lubricated and dignified, so its engraving takes more effort than jade carving. In general, agates that have been crafted by skilled craftsmen are highly collectible, and the thinner agate is more difficult to carve. If you see the old Ming and Qing agates in the market, you should be careful about modern imitations. Because of the engraving process at the time, the hole punched in the middle is not very smooth, and it is generally twisted and twisted. If you see a smooth hole in the hole, you can basically judge it as a fake or a fake. From the point of view of the shape, the agate collection with typical shape has a higher value. The texture of agate is very hard, and it takes dozens of processes to make it. Therefore, the more complicated the shape, the higher the cost, and the higher its value.
"People's judgment on the quality and economic value of agate is generally based on the naked eye recognition as the main means. The quality of agate quality and the evaluation of economic value are also of a certain level," Song Qingfeng said. The specific standards are: special agate: beautiful stripes; pure color, bright red, blue, purple, pink; good transparency, that is, translucent; no cracks, no sand, no impurities; block weight of about 5 kg or more. First-grade agate: beautifully colored; pure color, bright red, blue, purple, pink; good transparency, that is, translucent; no cracks, no sand, no impurities; block weight of about 2 to 5 kg. Secondary agate: beautifully colored; pure color, bright red, blue, purple, pink; good transparency, ie translucent; no cracks, no sand core, no impurities; block weight about 0.5-2 kg. Three-level agate: beautiful stripes; pure color, bright red, blue, purple, pink; good transparency, that is, translucent; no cracks, no sand core, no impurities; block weight of about 0.5 kg or less.
The above aspects are the identification methods of the quality of the true agate, and the authenticity of the agate is also different: firstly, the true agate color is bright and bright in the pattern and color, and the color and light of the fake agate are both poorer, and the contrast between the two is more obvious. The natural agate color is distinct, the strip pattern is very obvious, and the fake fake agate is mostly bright and uniform, giving a false feeling. In the texture, the fake agate is mostly imitation of stone, which is softer than the true agate. The jade can be traced on the fake agate, but the real thing can not be drawn. On the surface, there are few flaws in the real agate, and there are more inferior qualities. In terms of transparency, true agate transparency is not as good as synthetic, slightly chaotic, and some can see natural water lines or "clouds", while synthetic agate has good transparency and transparency like glass balls. True agate jewelry is heavier than synthetic agate jewelry in weight. At the temperature, the real agate is warm in winter and cool in summer, while the synthetic agate changes with the outside temperature. It also becomes hot in the hot weather, and it cools in the cold.
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