Chalcedony has always been regarded as the essence of jade, which is formed by the condensation of nectar. Its fine particles, its main mineral composition is cryptocrystalline quartz, the shape and size are different, the gloss is mostly glass or waxy, translucent or slightly transparent. It is also very rich in color, with dark green, apple green, blue, etc., among which green is the most beautiful. But often some people can't tell the difference between chalcedony and jade. Xiaobian is here to explain to you, what is the difference between chalcedony and jade? First, we need to figure out the definition of both. In mineralogy, the definition of strict jade only includes a few jade varieties, such as jade, Hetian jade, etc., which have no chalcedony. However, the concept of "Jade" is much larger, and the chalcedony is one of the jade. Secondly, the composition of chalcedony and jade is different, which is an important reason for the difference between the two. The main component of jade is Ca2(Mg,Fe)5Si8O22(OH)2); the main component of chalcedony is silica (SiO2), which is a collection of cryptocrystalline quartz. In this way, they are not the same type of substance. In jade, the jade that is easy to be confused with chalcedony is Dongling Stone, Miyu, Jasper and so on. So pay special attention when shopping. They can be distinguished from the color of the texture and so on. The texture of chalcedony has a cryptocrystalline structure, and the particles are tiny and cannot be seen by the naked eye. The most obvious thing about Dongling Stone is that the particles are large and the texture is coarse and rough relative to the chalcedony. Green jade, turquoise, etc., are also easily confused with chalcedony, and they can be identified by careful observation. Green jade has a fibrous shape, no chalcedony; turquoise, low transparency, low hardness, and porcelain luster. However, because there are many kinds of jade, it is impossible to compare the common and the chalcedony. Therefore, the following small series selected several jade similar to the chalcedony for comparison. Green chalcedony and green jade The surface of the green chalcedony is bright and delicate. The color is usually apple green, which can be seen in varying degrees of depth and translucency. The green chalcedony is brittle and will fade when heated or exposed to sunlight. The green jade has a variegated interwoven structure, and it can be seen as a patchy or fibrous jadeite crystal. The appearance is glassy, ​​mostly translucent or transparent, and the emerald color is pure and pure. In terms of weight, the green chalcedony with a specific gravity of 2.60 is much lighter than the jade with a specific gravity of 3.24 to 3.43. Green chalcedony and turquoise The green chalcedony is generally translucent with a Mohs hardness of 6.5 to 7; turquoise is usually opaque and has a low Mohs hardness of 5 to 6. Both are very easy to distinguish. Floral Fabric,Velour Fabric,Polyester Velour Fabric,Printed Velour Fabric Shaoxing Cornfield Textile Trading Co,.Ltd , https://www.cornfieldtextile.com
May 07, 2021