Agate is a quartz aggregate rock composed of silica. The structure of agate is cryptocrystalline and microcrystalline, with a hardness of 6.5 to 7 degrees and a refractive index of 1.53 density of 2.60 g/cm3. It is glassy and the agate particles are very fine. The physicochemical properties of agate are basically the same as that of chalcedony, but the difference is that agate has a pattern of concentric rings, but chalcedony does not. The color of the agate is colorful, with colors such as red, blue, purple, yellow and black. The agate is listed as one of the seven treasures of Buddhism in ancient agate due to its high hardness and bright colors.
Jade, in the gemological academics, jade refers to the production of nature, composed of mineral aggregates, with aesthetics, durability, scarcity and process value and can be used for carving, with a certain head (transparency), luster and The color of the rock. In a broad sense, that is, the definition of gemology, jade refers to all the rocks that are beautiful and can be used for carving, such as jade, nephrite, jade, dushan jade, agate and chalcedony. But in a narrow sense, the jade that people often say refers to the two types of jade and nephrite, because jade and nephrite are the most popular in the market. Gradually, when people talk about jade, the first thing they think of is jade. And nephrite.
Having explained the concept of agate and jade, what is the difference between agate and jade?
Jade is a broad concept in a broad sense, including jade, nephrite, jade, water foam and agate. Agate and other kinds of jade have great differences. The first is the difference in physical properties. The hardness of agate is 6.5 to 7 degrees, the refractive index is 1.53, the density is 2.60/cm3, and the appearance is glassy, ​​while the emerald The density is about 3.33g/cm3 and the refractive index is 1.66. The jade has a bright glass luster. It is different from the agate's glass luster. It looks brighter and more lustrous and has a rigid; nephrite (also often called Hetian jade). The density is 2.95 g/cm3, the refractive index is between 1.606-.632, nephrite is generally translucent, exhibiting a grease luster and the like. Secondly, in appearance, agate has a unique concentric ring-like pattern, and the pattern is circled one by one, while other kinds of jade do not have such a concentric ring-like pattern structure. This is also a very intuitive way. It can distinguish one of the characteristics of agate and other jade. In terms of color, agate has many colors. As the saying goes, "Thousand kinds of agates are made into thousands of jade", and other kinds of jade also have many colors, especially jade, but the color of agate is very vivid, very beautiful, and evenly distributed. The color bands are obvious, while other types of jade have no distinct bands.
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