The formation of chalcedony is relatively difficult. It is generally known to occur in the sediments of hot springs and in the cavities of eruptive rocks, and it also requires a long-term objective environment of low temperature and low pressure. The conditions for formation are very harsh. Just look at its stalactite-like appearance and the fascinating colors filled with the spooky colors to imagine its rarity and preciousness.
After the chalcedony is processed, it is more dazzling. Whether it is green chalcedony, purple chalcedony, and chalcedony, it is so crystal clear, especially the chalcedony halo and the color distribution are more uniform after high temperature treatment. . It seems as if a drop of crystal water containing natural colors is in front of you.
How to identify the true and false of chalcedony
How does Moyu identify how sapphire identifies white jade and how to identify the method of identification of chalcedony
How to identify chalcedony staining
The chalcedony is often dyed. How to identify the chalcedony stain?
The dyeing treatment can dye the chalcedony into green and blue. The detection characteristics of the dyed chalcedony used to model the natural green chalcedony are: two to three fine chromium absorption lines appear at the red end of the spectrum, under the Charles filter. It has a reddish tint and a slightly lower density than the ochre green chalcedony colored with nickel oxide. Natural blue green chalcedony is less common.
Treatment with sugar and acid can produce black chalcedony, often called black onyx, which works well because the dye is evenly distributed into the cryptocrystalline components of the chalcedony.
How to identify the value of chalcedony
How to identify the value of chalcedony has the following points:
1. Sightseeing Ze: True jade has a warm luster, whether it is translucent or opaque. It has normal impurities with a small amount of impurities or cotton-like patterns. The fake jade is dry and dry, gray and dull, and there are bubbles.
2, measure the hardness: use a knife to engrave, scrape, the real jade does not leave traces.
3, the proportion of 拈: true jade feel heavy, fake is light.
4, listening to the sound: the jade hanging with a line suspended, with a hard object to knock, the sound of the real thing is crisp and sweet, the afterglow melodious; fake is relatively dull and dry.
5, look at the fracture: observe with 10 times magnifying glass, the jade of the real jade is uneven, visible fine structure; the jade of the jade is neat and shiny, often a glass imitation, the fracture structure is rough, no waxy luster It is a stone imitation.
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