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Main jade producing countries. Jade is an umbrella term for two different types of decorative rocks used for jewelry or ornaments.Jade is often referred to by either of two different silicate mineral names: nephrite (a silicate of calcium and magnesium in the amphibole group of minerals), or jadeite (a silicate of sodium and aluminum in the pyroxene group of minerals). [1]
Jadeite is a pyroxene mineral with composition Na Al Si 2 O 6.It is hard (Mohs hardness of about 6.5 to 7.0), very tough, and dense, with a specific gravity of about 3.4.It is found in a wide range of colors, but is most often found in shades of green or white.
While nephrite jade possesses mainly grays and greens (and occasionally yellows, browns, black or whites), jadeite jade, which is rarer, can also contain blacks, reds, pinks and violets. Nephrite jade is an ornamental stone used in carvings, beads, or cabochon cut gemstones. Nephrite is also the official state mineral of Wyoming.
The Jade Emperor ordered Mountain God to trap the four dragons. However, from each mountain that trapped a dragon there sprang a new river. From Yellow Dragon came the Yellow River, from Long Dragon the Yangtze River, from Black Dragon the Amur River, and from Pearl Dragon the Pearl River. The rivers thereafter flowed from west to east and ...
Together, both of the texts are also referred to (within the manuscript itself) as "Jade Book" or "Jade Writing". The fourth century “Sage of Calligraphy”, Wang Xizhi, presented the full text of the Internal Scenery Scripture of the Yellow Court on the stone tables in his classic artwork, a well-known masterpiece of the Chinese calligraphy.
Flower jade or picture jade is pounamu with cream, yellow, or brown inclusions, from oxidising or weathering in the surface of the stone. Cracks or fissures in the stone can allow iron impurities to enter, and carvers can then make use of the resulting patterns. Flower jade is best known from the Marsden district near Hokitika. [3]
Yupei (Chinese: 玉佩; pinyin: Yùpèi) is a generic term for jade pendants. [1] Yupei were popular even before Confucius was born. [2]: 18 Jade culture is an important component of Chinese culture, [1] reflecting both the material and spiritual culture.
The jade plant is an evergreen with thick branches. It has thick, shiny, smooth leaves that grow in opposing pairs along the branches. Leaves are a rich jade green, although some may appear to be more of a yellow-green. Some varieties may develop a red tinge on the edges of leaves when exposed to high levels of sunlight.