In recent years, the jade jewelry market has been mixed, with A goods, B goods, and B+C goods. The name of jadeite is not the same. Jadeite such as jade is produced in Myanmar. Some merchants are nominally called jade jade, and China traditionally calls it jadeite. In the name of the national standard gemstone, it also determines its correct name to call jade. . Natural jadeite only marks its jade on the commodity sign, without adding the natural word. In order to distinguish the natural and artificially treated jade, there is also a natural jade called A goods, which will be treated as B goods, C goods. Or B+C goods. China has a vast territory, different southern and northern languages, different customs, and different names for jade, but what are the “old pits†and “old species†of jadeite? How to identify the "old pit" jade jewelry? Here are some of my own understanding and understanding to discuss with fans.
Before we talk about "pit" and "species", we must first understand the jade itself. Emerald is a silicate of sodium and aluminum silicates. It is not a single crystal (such as diamonds, emeralds, red sapphire, etc.), but a jade of polycrystalline aggregates. Because its Mohs hardness is about 7 degrees, it is also called jadeite. Because it contains various oxides, iron, chrome and nickel make the jade appear colorful. Its red, green and violet are the favorite colors of everyone. There are red and green kingfishes like fish in the south. Therefore, this jade is also called jade.
There is a species of jade, which refers to the texture and transparency of jade itself. The thickness of the crystals and the density of the crystal gaps that make up the jade determine the germplasm and water head (ie, transparency) of the jade itself. The crystals are fine and dense, and the jade will be fine and transparent. On the contrary, the jade will become coarse and loose. Dry, rough, opaque, fine crystal grain gap, jade germplasm is old, called "old species"; and coarse, loose, its germplasm is tender, known as "tender" or "new species" ". Jade's "earthing" and "planting" are very important to us who buy jade. It shows that in the hardness of jadeite, the older the kind, the higher the hardness, and the more wearable it is, the more it can be used for thousands of years. A new kind of tender green jade pieces, the hardness will drop, not wear-resistant, and the inner green will also see dry, no aura, so as the saying goes, "the insider looks at the species, the layman looks at the color."
The advantages and disadvantages of the species can be arranged as glass species, ice species, egg white species, alfalfa species, bean species, etc. The crystals are fine and dense to the cryptocrystalline state and become the glass species, that is, the oldest species in Cui, the older the species, the transparency The better. The crystals of the beans are thick, like beans, and they are thicker than the beans. They are not gem-like jade. They are no different from ordinary stones. Now they are glued and dyed. Jewelry is to use the width of its crystal gap. After cleaning with strong acid, it will inject chemical colloid into the gap of the crystal gap, and then engrave and polish it. There will be many pits and pocks on the finished surface. When it is new, its gloss is like wax, after use. It will gradually lose its light, and the natural surface will be shiny after being polished. The more it is used, the more bright it is, so don't worry that the glass on the desk will scratch it. The color will appear psychic and bright on the old species. Whether or not the germplasm is "old" in the evaluation of jade is an important condition. It should be noted here that jadeite is not necessarily "old species", and the "old species" will be transparent (water head) it is good).
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