The ancients think that emerald is the stone of heaven, it can bring people good luck. Symbol of purity, the sun, justice, courage, harmony and purity of the spirit, but also implies that men and women feelings.Jade color natural and full of change, bright and pleasing to the eye, and nature is extremely coordinated, on behalf of all things vibrant and youthful vitality. The color of jade than ever before the color of jade must be bright, its texture than any jade are delicate, it can be as transparent as a crystal, its value is the highest of all jade, so people call it " King of jade ", by the East nation, especially the Chinese nation's favorite.