Jade is a soothing green color. It is an avocado green gem, with darker mottled flecks of green in it. This variety of jade comes from Wyoming. It is composed of sodium aluminum silicate, and because of its felt-like structure, it is very tough and resistant.
The name goes back to the time of the Spanish conquest of Central and South America and means "piedra de ijada" (hip stone), as it was used as a protection against and cure for kidney diseases. Jade is the prince of peace and tranquillity. It acts quietly as a consciousness raiser of human development. It dispels negativity by the constant emission of soothing and cleaning vibrations.
It is said that jade is not from the Earth, but is a mutation from a planet outside this solar system. Jade can never harm anyone wearing it, for it does not absorb negative attributes of any nature. It is said to prolong life, protect one from accidents, and quiet inner restlessness.
SOURCE: Truth about Crystal Healing, Phyllis Galde