When buying jade jewelry in a jewelry store, I often hear some hand-in-hand introductions that the jade is older, higher in color, and more watery. The piece of jade is not suitable for years, tender, light, and dry.
In their view, the jade is the older the better. In fact, when it comes to the year of jade, it is the first thing to understand the concept of new and old at this time. This old and new refers to the jadeites under the ground and the geologists What about the age?
Still referring to people who found jade before and after? Or is the year in which the people bought the finished product? The old pit and the new pit are actually divided according to the years before and after the discovery of the jadeite. According to the geological indecent point, they are not different in the geological period of the underground. The secondary deposits of river sediments are formed by the river channel transported to the riverbed during the Quaternary period. It can be said that the deposit is later formed.
Some of the hands have found that the quality of the jade in the "old pit" is better and the water is more abundant. This is a fact. Is it because the water is soaked in the river and the water is formed into the crystal? In fact, this is not the case. The jadeite found in the river sediment deposits is of good quality, high color, fine quality and good transparency. For this environment, a reasonable interpretation can be obtained from the geological reason.
In fact, these phenomena exist in the jade trampoline, and other gem deposits exist as well. For example, the diamond in the sand mine is better than the original deposit.
This is because the primary deposits actually have various types of ore of different quality, and the water is transported and deposited into secondary deposits. Some of them are of poor quality, such as cracks, coarse grains, loosely laid, impure emeralds. You will get natural sorting and reduction. Finally, in the riverbed, if the texture is more prudent, the layout is finer than the jade. This kind of jade is often more transparent, but it is not caused by water entering people. Water can't enter the jade crystal. The jade quality of the old pit is better because of this relationship.
The layer of skin on the surface of this jadeite is because when the jadeite is exposed to the surface, it is affected by the oxidation and hydrolysis of the natural world, causing some iron and manganese contained in it to precipitate as an iron oxide or manganese oxide. Forming a layer of shell, just like the knife that is not commonly used, its profile contains the same principle of oxidation and rust. It can be said that the quality of jade in "Old Pit" is better, but there are also jadeites with better quality in the new pit, but only relatively few. This is the result of no sorting.
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