What good things have you bought that are cheap enough to scream?

Chalcedony has always been regarded as the essence of jade, and it is said that it is condensed from nectar. Chalcedony particles are fine, the main mineral component is aphanitic, with different shapes and sizes, and the luster is mostly glass or wax, translucent or slightly transparent. It is also rich in colors, such as dark green, apple green, blue and so on, among which green is the most beautiful.

However, it is often asked that chalcedony has the word "jade" in its name, so is it jade after all? So today we will talk about chalcedony and jadeite, hoping to clarify the concept for all treasure lovers.

Chalcedony only exists in the broad sense of "jade" rather than the narrow sense of "jade"

Whether chalcedony can be called jade depends on the definition of jade.

In a narrow sense, "jade" refers to a few rare varieties that we have clearly defined in mineralogy, including jadeite, nephrite and hetian jade. "Jade" in mineralogy does not include chalcedony.

The main chemical composition of jadeite is basically Ca2(Mg, Fe)5Si8O22(OH)2, and the chemical composition of chalcedony is SiO2, which is an aggregate of cryptocrystalline materials. Therefore, the difference in chemical composition also fundamentally denies the question that chalcedony is "jade" in theory.

But why does chalcedony have the word "jade" in its name? That's because in our general concept, "jade" in a broad sense is also called "jade", and its scope includes many beautiful stones with delicate, hard, shiny and slightly transparent surfaces that can be carved into handicrafts.

Chalcedony meets such conditions, so it is also included. In addition, Dongling jade, Miyu, Jasper and Xiuyu also belong to this category, and they are easily confused with each other.

Because there are many kinds of jade, it is impossible to compare with chalcedony, so here we choose several jade similar to chalcedony for comparison.

Although the surface of chrysotile asbestos is bright and the texture is fine, its color is usually apple green, which shows different degrees of depth changes and is translucent. Chrysotile is fragile and will fade when heated or exposed to the sun. Green jadeite has variegated structure with variegated or fibrous jadeite crystals. Its appearance is glassy, mostly translucent or transparent, and the emerald color is rich and pure. In terms of weight, chrysotile with a specific gravity of 2.60 is much lighter than jadeite with a specific gravity of 3.24-3.43.

Of course, the most important thing is that there is also a gap in price between the two.

How to distinguish chalcedony from other jade when purchasing?

Pay special attention when purchasing, and you can distinguish chalcedony from other jade in texture and color. Chalcedony is fine in texture, with aphanitic texture and tiny particles, which are invisible to the naked eye.

Compared with chalcedony, Dongling jade is famous for its large particles and rough texture. Green jadeite and turquoise are also easily confused with chalcedony, which can be distinguished by careful observation. As the green jade said just now, because the interior is a fiber interwoven structure, which is invisible inside chalcedony; Turquoise, on the other hand, has low transparency and hardness and porcelain luster, which is different from chalcedony oil to glass luster. Chalcedony has no irregular lines on the surface of turquoise.

In addition, many styles and designs will also use black chalcedony with gem jewelry to enhance the fashion sense of jewelry.