Changsha Qingshuitang Street Antique Market can buy good jadeite jade (1), the difference between nephrite and jadeite. We often hear things like "Hetian jade", "Taiwan jade" and "Canadian jade". And the names of "suet white jade", "jasper", "sapphire" and "jet" belong to the aggregate called "nephrite" in mineralogy. "Nephrite" has never been seen in ancient books in China, and it comes from modern mineralogy. Nephrite is a special aggregate composed of amphibole minerals. Nephrite can be divided into white jade, sapphire, jasper, jet, topaz, sugar jade and other important varieties according to its color. The difference between nephrite and jadeite is: 1. Nephrite color is relatively uniform, including white, dark green, dark green and so on. , no bright green. 2. Nephrite is oily and shiny, and there is no emerald. 3. The proportion of nephrite (3.00) is slightly lower than that of jadeite. 4. The refractive index of nephrite (1.62) is also slightly lower than that of jadeite. (2) The difference between "Ma Laiyu" and jadeite In the 1980s, a kind of green, bright and uniform jadeite appeared in the jadeite market, and many people were deceived by it, thinking that it was a "rare high-grade jadeite". What exactly is this jade? This kind of jade is called Malaysian jade (short for Ma Yu, also known as "Malay Cui"), just a name. Malaysian jade is not produced in Malaysia. It is the name of a kind of fake jade brought to the Yunnan border by some Indian and Pakistani businessmen in the early days of mainland opening. Ma Laiyu is actually a very fine quartz dyed green, but it is obviously different from jadeite: 1. Visually, the color of Malaysian jadeite is too bright and unnatural. 2. The proportion of Malaysian jade is 2.65, which is much smaller than that of jadeite from 3.24 to 3.43. 3. The average refractive index of Malaysian jadeite is 1.55, which is lower than that of jadeite. 4. The color will not turn red under the Charles filter, but the dye can be observed under the ten times lens, that is, the color floats, which is a dyeing phenomenon. (3) The difference between Australian jade (serpentine) and jadeite. Australian jade, also known as Nanyang jade, is named because of its richness in Australia. Because of its green color, it is very popular with people. It has certain transparency, fine particles and low price, which once puzzled some people. In fact, it is an aphanitic SiO2, which is mineralogically called chalcedony or chalcedony. Strictly speaking, Australian jade can't be called jade, it should be chrysoprase. Its appearance is quite similar to that of jadeite, but the difference with jadeite is: 1. Australian jadeite is too uniform in color, showing raw apple green, rarely dark green, much like plastic. 2. With a magnifying glass, Australian jadeite can never see emeralds. 3. Australian jadeite with a specific gravity of 2.60 is much lighter than jadeite (3.24 ~ 3.43). 4. The refractive index of Australian jadeite is 1.55, which is lower than that of jadeite. (4) The difference between Dongling jade and jadeite is that there is a translucent pearl in the jewelry market, which is medium green in color (its depth changes) (occasionally carved into ornaments). Because of its green color and low price, it is welcomed by many ladies. What is this beading? Asked the seller, he replied, "This is Dongling jade made in India". Dongling jade, also known as Dongling stone, was first born in India, so it is also called "Indian jade". It is also produced in China and Henan. Some people call it "Miyu", but the correct name should be Ying. The difference between Dongling jade and jadeite is: 1. It can be seen from perspective light that there are parallel green chromite mica flakes in Dongling jade. Seen from the side, a "green line" is often formed. Observing under Charles filter, the green chromite appears red. 2. The proportion of Dongling jade is 2.65, which is much smaller than that of jadeite. You can measure it by hand. 3. The average refractive index of Dongling jade is 1.55, which is lower than that of jadeite. (V) The difference between ink (albite jade) and jadeite In recent years, in the jewelry markets of Kunming, Ruili, Tengchong and some big cities in the mainland, an "ice seed" jadeite with good water head is transparent or translucent, generally white or grayish white, with few white spots and ribbons and uneven distribution. This kind of jade is called "water princess" in Yunnan. In fact, the main mineral composition of ink is albite, followed by a small amount of pyroxene and amphibole minerals. The following methods can be used for simple identification: 1. Magnified observation method: the ink is mainly albite, not emerald, mostly white stone brain or cotton. 2. Hand balance method: the specific gravity of water mill (2.57 ~ 2.64) is much smaller than that of jade, and it has obvious light floating feeling compared with jade. 3. Measurement method of refractive index: The refractive index of water mill (1.52 ~ 1.54) is much smaller than that of jadeite. In a word, by understanding the characteristics of jadeite, we can master the difference between jadeite and similar stones.