There is a closed cavity in the agate, which contains water or an aqueous solution. This agate is called a water agate. The water agate is formed by nature, and the agate is wrapped with naturally formed water, which is especially precious in agate products. Therefore, many people use water bladder as a proof of authenticity of agate. In the recent market, there have been many abandonment incidents of agate water bladder, even if there is "biliary", it can not be fidelity.
Since the price of agate in the water-bearing agate market is more expensive than ordinary agate, the fake water agate is very common in the market. Ordinary agate crafts are generally cut or drilled after a preliminary carving, and the hole is filled in the middle, then glued with strong glue, and repaired and polished to pretend to be true water. In addition, there is often a phenomenon of dry and non-hydrated in agate. For this, it is a common practice to plug in holes and then plug them. Blocking the upper part to cover it is hard to detect. During the engraving process, the situation in which the water gallbladder was accidentally broken occurred. At this time, the same color agate is used to sculpt the ornament, which is difficult to see. For the leaking gall bladder, the water is infiltrated through the crack, and the water is poured in, and the crack is sealed with a strong glue or the like.
There are many ways to fake water agate, so how do you judge the true and false water agate? The shape of the water agate is mostly irregular, round, elliptical or oblate, with no sharp edges and a smooth surface. To identify whether there is a water bladder in the agate, the following methods are generally used:
Use hearing to determine if there is a water bladder
Put the agate material in both hands, hold it steady, shake it from side to side, close your ears, and listen carefully to the sound of the sloshing in the raw material. Some hollows are large, and there are many liquids, which can make a squeaking sound; some have small holes, less water, and the sound of shaking is small or silent, some are too small, or the water is too full, you can't hear it. sound.
Judging whether there is a water bladder by hand
As the water bladder shakes, the water will rush into the hole in the hole, so the motion will be sensed to the outside, and it can be judged that there is no water. The weight of the hand can also be judged to have no water. Water agate agate is watery and watery, and the higher the transparency, the better.
Use light to judge that there is no water
The raw material is peeled into water, so that the surface is completely wetted, and after taking out, the raw material is irradiated with a spotlight or a strong concentrating flashlight (i.e., the back surface is irradiated), and then the water in the middle can be seen by careful observation from the front. If there is water, then the water in the lower part of the cavity and the upper space will have a more obvious sloshing boundary, that is, while shaking, while the water rib is larger, the biliary is thinner, and the transparency of the raw material is higher, the water can be seen in the hole. Swing in.
Magnifying glass observation
Use a 10x magnifying glass to observe carefully, and use a knife or a needle tip to describe the problem. Because the agate has a hardness of 7 and the hardness of the knife is 5-5.5, the true agate can not be traced. If the fake part is glued with glue, its hardness is generally For 5, a knife can be used to draw traces.
Water agate is especially rare and precious in agate products. Therefore, when picking agate stone, the jade carving craftsman must first determine whether there is a water bladder. When it is determined that the water is agate, it is also necessary to determine its position and size, and then cut with a cutter. If the cut surface is not far from the water bladder, the market price will not be as expected; when the cut surface is too close to the water bladder, it is easy to cut the water bladder, and the agate that has broken the "biliary" loses its value. .
A brightly colored and crafted water-bilid agate craftsmanship is often ingeniously crafted and fascinating. Some performances hold peaches, peaches have water; some show Li Bai drunk, there are drinks in the tank; some show Sima Guangyu cylinder, there is water in the tank; some show loofah gourd, there is water in the gourd... and In the case of a Mohs hardness of 7, it is particularly difficult to sculpt the water agate into a handicraft and to show the water broth just right. It can be seen that a successful water-bilid agate craftsmanship is difficult to sculpt and has high technical requirements, which is difficult for outsiders to imagine.
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