What are the turquoise classifications?
What are the turquoise classifications? Turquoise classification is from many aspects, such as the origin of turquoise, turquoise color or turquoise structure, etc., specifically need to learn together with Xiaobian!
Turquoise by color
A, blue turquoise: blue, opaque block, sometimes dark blue;
B, light blue turquoise: light blue, opaque block;
C, blue-green turquoise: blue-green, opaque block;
D, green turquoise: green, opaque block;
E, yellow-green turquoise: yellow-green, opaque block;
F, light green turquoise: light green, opaque block.
Turquoise by region
A. Nishapur Turquoise: Produced in the Nishapur area on the Mount Ali Miesel in northern Iran. The ancient Chinese called "returning to the Dianzi", and Japan and other countries called "Oriental Turquoise".
B. Sinai Turquoise: Located on the Sinai Peninsula, it is the oldest turquoise mine in the world.
C, American Turquoise: Produced in the southwestern states of the United States, especially Arizona.
D. Hubei Turquoise: Turquoise produced in northwestern Hubei Province, anciently known as "Jingzhou Stone" or "Yangyangdianzi. Hubei has a large production of turquoise and excellent quality. It is well-known in China and abroad. It is mainly distributed in Jixian, Zhushan and Daixi in the northwest of Hubei. In other places, the mine is located in the western end of the Wudang Mountains and in parts of the south of Hanshui.
According to the place of origin, there are also Egyptian turquoise, Chilean turquoise, Australian turquoise, and so on. However, some names of origins not only represent the place of origin, but also represent and indicate the quality level of turquoise, so these names also have a quality rating.
Turquoise by structure
A. Transparent turquoise: refers to transparent turquoise crystals. Very rare, only produced in Virginia, USA, after honing transparent gems weigh less than 1 carat;
B. Blocky turquoise: refers to dense blocky turquoise, which is bright in color, fine in texture, tough and smooth, and is the main material of jade carving, which is quite common;
C, tuberculous turquoise: refers to the shape of a spherical, ellipsoidal, grape-shaped, pincus-shaped turquoise, the size of the tuberculosis is very different;
D, blue turquoise: also known as "lace turquoise", refers to the turquoise formed by the presence of iron with a spider web pattern;
E, iron wire turquoise: refers to the surface of the turquoise with a fine iron black line;
F, porcelain turquoise: refers to the sky blue, the texture is dense and tough, the fracture is broken like a porcelain break, the unusual bright turquoise, the quality is good;
G, veined turquoise: refers to the veins that are veined and present in the broken zone of the surrounding rock;
H, variegated turquoise: refers to the speckled, star-like structure of turquoise due to the inclusion of kaolinite and limonite, the quality is poor;
I, face loose: refers to the texture is not strong turquoise, the fracture is granular, the hardness is small, can be scored with nails. Some blocks are available;
J, foaming: refers to the turquoise which is softer than the surface, which is inferior and cannot be used as jade carving material. However, this turquoise has been artificially colored and glued to become an optimized turquoise variety.
The above is an introduction to the classification of turquoise, I hope to help my friends have a lot of understanding and understanding of turquoise!
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