Looking for a fine green gem with rich color and excellent clarity? What are your choices? The traditional choice is emerald, though emerald is more famous for its color than its clarity. Tsavorite garnet came on to the market in the late 70′s and became the second choice in fine green gems. High quality tsavorite not only has an excellent saturated green color, it has superior brilliance, clarity and hardness.
Green tourmaline known as chrome tourmaline. Like tsavorite garnet, chrome tourmaline is found in East Africa, and colored by trace amounts of chromium and vanadium. And like tsavorite, fine chrome tourmaline is a visually pure forest green with a slightly yellowish to bluish secondary hue.
Green sapphire can occur in colors ranging from a light mint green to a dark forest green. The finest green sapphire is thought to come from Sri Lanka, but they are very rare indeed. Most of the green sapphire you will see in the market are from Thailand or Australia. These tend to darker green and are often blue-green or yellow-green. Green sapphire may also be found from Burma and Madagascar.
Green sapphire is colored by traces of iron. In some cases the green color of due to the presence of both blue and yellow bands, which make the green gem appear green to the eye. But the color zoning is obvious under magnification, and can sometimes be seen with the naked eye.
The only green gems left are peridot and ordinary green tourmaline. Peridot tends to the yellowish or olive green, and dosnt have the deeper tones of tsavorite or chrome tourmaline. Ordinary green tourmaline rarely has the wonderful saturation of the chrome version.
Though there are many choices in green gems, the excellent gemstone characteristics of corundum make green sapphire a popular choice though.