Green
Green jade is the most prized type of jade when it is naturally green and not enhanced or dyed. It comes in various shades, from a deep, dark green called best green to shades of green with a brownish tinge. It also can be a pale, mottled green with white or gray streaks through it. Green jade gets its color from chromium.
Red
Red jade is infused with a large amount of iron oxide, giving it a reddish, rusty hue. It is associated with passion and love and the release of negative energy. Red jade is found in the United States, China, Italy, Russia and the Middle East. Red jade is relatively rare and quite valuable.
Black
Black jade contains both iron oxide and graphite. It can range in shade from a very deep black to a deep dark green. Black jade is relatively common and is very popular with jade enthusiasts. It is a very tough and dense type of jade that has microscopic needle-like fibers that bind the stone together. Black jade can be found all over the world.
White
White jade is 99 percent tremolite and usually has few impurities. It is very rare and is sometimes used in place of diamonds to represent deep love for another person. White jade that is not very translucent is known as mutton fat jade because it sometimes has a slight yellow color. The most valuable type of white jade is a colorless, translucent variety known as ice jade.