The color of emeralds is very charming. Some people use spinach green, onion heart green and tender tree bud green to describe it, but they can't accurately express its color. The green is a little yellow, but it seems a little blue, and even the spectrum seems to be a little less wavelength. It is one of the treasures that people can never get tired of seeing. Whether it is cloudy or sunny, whether it is under artificial light or natural light, it always emits soft and rich light. This is the charm of emerald, king of emeralds.
Emerald is a gem-grade green beryl. Its green color should reach a medium and rich green tone, that is, the color density should be saturated. Light green is usually called green beryl.
Beryl contains a proper amount of cr2o 3(0. 1.5 ~ 0.6%), forming emeralds. It is the most outstanding member of beryl family. This material belongs to high-grade gem. The source of color is: trace chromium oxide makes it appear crystal clear and beautiful green.
Extended data
The main producing areas of emeralds are Colombian, Russian, Brazilian, Indian, South African, Zimbabwean and China. At present, the most common emeralds in the international market come from three producing areas: Colombia, Brazil and Zambia.
Emerald produced in Colombia is famous for its good color, good texture and large output, and it is the largest producer of high-quality emeralds in the world. The two most important emerald deposits in Colombia are Muzo and chivor, which are located in the Cordillera Mountains, about 100km northeast of Bogota.
Emerald deposits in Zimbabwe were discovered in 1957. The output is huge, and it has become a new major exporter of jadeite in the world. The deposit occurs in Archean crystalline rocks, and the surrounding rocks are diopside and chlorite schist. Emerald is produced in uneven distribution of porphyritic crystals. The ore body is 300-500m long, 0.2-10m thick and100-200m deep.
There are many emeralds in Brazil, but the crystals of emeralds are small and flawed. Only at 1962, high-quality emeralds were found in Bahia. Emerald minerals in Brazil are mostly located in the northeast, especially in Bahia. Most of the best quality emeralds in modern times are still produced in South America, and the crystals are almost completely transparent and brightly colored, comparable to Colombian emeralds.
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