1, chalcedony: the main chemical component is SiO? ; It may contain elements such as iron (Fe), aluminum (Al), titanium (Ti), manganese (Mn) and vanadium (V). Crystallization state: aphanitic aggregate, dense block, or spherical, radial or fine fibrous aggregate.
2. Jade: Jade is a noble ore. Jade is rich in trace elements such as zinc, iron, copper, manganese, magnesium, cobalt, selenium, chromium, titanium, lithium, calcium, potassium and sodium.
Second, the characteristics are different.
1, chalcedony: As the latest popular jade species in the 20th century, chalcedony was deeply loved by people at that time. Chalcedony is essentially a cryptophyllite, that is, silica, which is the same mineral as agate, but there are also differences. A remarkable feature of chalcedony is that its permeability is like ice. Good chalcedony can reach the glass type of jadeite, which is the biggest difference between chalcedony and agate.
2. Emerald: judged from five aspects: texture, hardness, transparency, specific gravity and color. The texture of jade refers to the delicate and moist degree of jade. One of the differences between jade and stone is that jade is delicate, moist and hard, translucent and glossy as fat; Stone, on the other hand, is rough and dry, lacking luster and opaque. Hardness refers to the ability of jade to resist external forces (such as pressing, engraving and grinding). The higher the hardness, the more difficult it is to process and the better the quality of jade.
Third, the formation methods are different.
1. chalcedony: Chalcedony is formed in caves, hydrothermal veins, hot spring deposits, clastic deposits and weathered crust of ejected rocks at low temperature and low pressure. Some chalcedony tuberculosis will contain water and bubbles, which is very interesting. Its physical properties are the same as those of the time.
2. Jade: The forming conditions of jade are extremely special and complicated. Most of them come from high-temperature molten magma tens of kilometers underground. These high-temperature mud rushed from underground to the surface along the cracks, and turned into hard stones after cooling.
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