Agate is a type of chalcedony mineral, often a banded block of opal and cryptocrystalline quartz, which is translucent or opaque. Agate is used as a gemstone or as a craft product because of its rich color and beauty. It can also be used to make bearings for precision instruments, industrial products such as agate carcasses and agate mortars. Sorting agate according to color can be roughly divided into the following categories.

(1) Red agate: The first thing to say is the red agate, the ancient red jade. Since the ancient times, red agate has been the top grade in a variety of agates. Therefore, in the "Ge Gu Essentials", there is a saying that "agate is not red." The value of red agate can be seen.

(2) Blue agate: refers to agate in blue or blue and white. This is a very beautiful agate, and the great one is a good raw material for jade carving. The quality of the person is dark blue, and the second is light.

(3) Purple agate: purple agate. It is mostly a single purple, and the quality is like amethyst, and it is bright. Purple agate is beautiful and mysterious and has been widely loved in recent years. The second is light, or not bright enough, commonly known as "boring."

(4) White agate: white agate or colorless agate, some belong to white chalcedony, used for making beads, and then artificially colored, can be colored into blue, green, black and other colors.

(5) Black agate: black agate. Black agate is rare in nature. At present, the black onyx in the Chinese jewelry market is artificially colored, and its color is dark and easy to mix with other black jade. Its hardness is greater than that of black slate.

(6) Green agate: green agate. Green agate is not seen in nature. At present, the green agate on the Chinese jewelry market is almost artificially colored. Its color is dark green and some are like jade. The color of the green agate is “small”, the texture is not green, and the texture is brittle.

(7) Agates of other colors: In addition to the above-mentioned agates, agates of other colors can be named according to different colors.

The above is the color classification of agate, the agate formed by nature and the colorful, is the best decoration for people to decorate and collect evil spirits!

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