Is Agate and his sister jade and chalcedony clear?
Chalcedony is known as the sister jade of agate, and I believe few people know this. And when we choose the jewelry made of such agate and chalcedony, how do we distinguish whether we see chalcedony or agate? Below, Jade Girl introduces you to the difference between chalcedony and agate:
When buying jade jewelry, I often encounter something called "chalcedony". What is it, and what is the difference with jade? Is it agate?
It is understood that there are many types of jade, in addition to the traditional Hetian jade, jade, but also agate, crystal, amber, chalcedony and other gemstones. For chalcedony, many people mistakenly believe that it is the essence of jade. In fact, chalcedony is not a jade, but a kind of jade. Many people will also confuse chalcedony with agate.
White chalcedony pendant
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. Jade girl is here to explain to everyone, what is the difference between chalcedony and agate?
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. And it is a quartz jade with agate.
There are many jewels and jade in quartz, and the crystal of single crystal (or twin crystal) is called crystal. The crystalline matter is quartzite, such as Dongling Stone and Jingbaiyu. The crystallites and cryptocrystals are chalcedony and agate. Chalcedony and agate are the same kind of minerals. The only difference is that agate has a banded structure and chalcedony does not. So it can be said that the cryptocrystalline quartz with a strip-like structure is agate, and the cryptocrystalline quartz with no strip-like structure and uniform color is chalcedony.
White agate pendant
Chalcedony is a common jade variety in nature. Its composition is mainly SiO. In addition, chalcedony is rich in trace chemical components and mineral components, such as e, AL, Ti, Mn, Mg, K, etc., so the color of chalcedony is very rich. The pure chalcedony color is colorless or white, translucent to slightly transparent. The common chalcedony products on the market include chalcedony pendants, rings, bracelets, earrings, etc. Usually the price of chalcedony varies from tens of yuan to thousands of yuan. The sound of knocking on the chalcedony sounds boring.
The main component of agate is silica. Due to the inclusion of oxidized metal, the color can range from very light to dark. The high-quality natural agate texture is natural and smooth, emitting glass and oily luster. Compared with chalcedony, the color of agate has a strong layering, clear color and obvious bands. In addition to distinguishing chalcedony and agate by tapping the difference between chalcedony and agate sound, chalcedony and agate can be identified from the presence or absence of a strip-like texture. The banded texture is chalcedony, and the obvious strip-like texture is agate.
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