The jadeite has a long history in Chinese culture. There are about five kinds jade, such as Burma nephrites, hetian jade, dushan antique jade, afhanistan jade and the xiuyu jadeite. During these kinds jades, they are always made in the different shapes, which has the various meanings. We have the jade craft, gifts and arts: bracelet, bangle, earring, pendent, and necklace. Some are jade animals, some are human beings (jersey or Buda), others are hand-craving sculpture jade and jadeite craving and souvenirs.
Jade has influenced all walks of life. In ancient times, people expressed abstract notions with concrete patterns of Chinese character, which were influenced by Taoism and Buddhism. Jade craftworks were among the most precious and luxurious ones; people wore and decorated rooms to indicate loyalty, elegance, beauty, and eternity. The most popular patterns were: peach (longevity), mandarin duck (love), deer (high official ranks), bat (blessing), fish (affluence), double phoenixes (thriving), bottle (safety), lotus (holiness), bamboo (lofty conduct), and fan (benevolence), etc.

Nephrite
Nephrite's robustness is due to the fact it contains tremolite. It also can be divided into several sub-classifications according to color: white, grey, green, topaz, and black jade.
In China, the most reputable jade producing area is Hetian in Xinjiang Province. Hetian jade is so hard that it can scratch glass. It has often been found in very huge pieces. An example of this is the huge jade hill on which the grand scene of Yu the Great leading people to control flood is elaborately carved. It was 5, 350 kg weight (11, 795 pounds) when it was completed. Now this artwork is displayed in the Forbidden City.
Serpentine jade, or Xiu yu in Chinese, is mainly from Xiuyan County in Liaoning Province. Made of many different ingredients, it takes on various appearances: white, yellow, light yellow, pink, green, dark green, light green and so on. This type of jade is usually coloured in various shades of green. Usually serpentine jade is semi-transparent or even opaque like wax.
Jade Bracelets
Lantian jade is produced in Lantian County, north of Xian in Shaanxi Province. It was also among the most charming ancient jades, for its rigidity made it easier to be carved into decorations and jewelry by our ancestors. The hue is uneven in colors of yellow or light green.
Nanyang County in Henan Province is famous for its abundant Nanyang jade. The ore district is located on an isolated 200 meter high hill, called Dushan Hill (thus its other name of 'Dushan jade'). It is distinctive for its whimsicality. Among the Nanyang jade artworks, you will find rare purple, blue and red ones.

Appreciation and Maintenance
Experts believe that, although more expensive, diamonds and gold cannot be compared with jade - jade is animated with a soul. They often buy to collect their favorite jade artworks, while people with little knowledge of jade may buy coarse works.
To obtain a real and choice jade article, you should take pains to learn and appreciate it. The criteria lie in the brightness of color and luster, compactness of inner structure, and the delicacy of the craftwork. For example, nephrite creates an oily luster and jadeite creates a vitreous luster. Tiny cracks can lower the value of jade; on real jade, air bubbles cannot be seen; the more lenitive the higher quality of jade, and so on.
Having purchased a jade article is just half the process of collecting. Jade is like a child that needs constant care. Enthusiasts need to work more to maintain this artwork, or blemishes may appear.

First, avoid bumping on hard surfaces as jade is delicate. Although sometimes a crack cannot be seen by the naked eye, the interior structure may have been damaged. As time goes on, it will appear and reduce the value of the piece.
Second, protect jade articles from dust or greasy dirt. If tainted, they must be scrubbed with a soft brush and light suds and washed with clean water.
Third, when left unused it is best to store the jade in a case or box to protect it from being bumped.
Fourth, jade should be kept away from perfume, perspiration or chemicals. The brightness of jade risks corrosion, especially emerald and other high quality jade, so it is better to clean it with a soft cloth after wearing it.
Fifth, do not expose jade to sunlight for a long time, or it may expand and the quality will change slightly.