Tourmaline - a magnificent gem and a substitute for ruby, blue topaz and sapphire

Tourmaline is a beautiful gemstone available in multiple colors. The most widespread is pink tourmaline but it is also available in blue, colorless, chrome, green or bi-color. Watermelon tourmaline is usually round and has white, green and red layers resembling a cut watermelon. Some tourmaline stones are cut to display their multi-colors. For example, emerald cut of tourmaline is desirable as it displays clear, chrome and green tones together.
Large deposits of tourmaline are found in Brazil and Africa though there are also deposits in other parts of the world. The beautiful colors of tourmaline are result of its iron, chrome, manganese and vanadium. The stone is a chemical combination of primarily silicate, aluminum and boron. And the crystal formation of this stone is very complicated.
Tourmaline has hardness on the Mohs Scale of 7 to 7.5 depending on the molecular structure. Jewelry with tourmaline isn't the best choice for people who do any heavy work with the hands as the stone can crack Pink tourmaline is preferable though the colorless variety of the stone produced by heating is the least valued. Tourmaline with the least flaws is most expensive but it is not an expensive stone in general.
The price of loose tourmaline stones range from 25-50$ dollars per carat and larger unflawes stones have a slightly higher price per carat. Rubelite, a form of tourmaline, is hot pink or leans toward deeper red tones. Its price per carat is about 100$. Since all varieties of tourmaline are less expensive than rubies, many people choose tourmaline as substitution for ruby jewelry. The variety of colors make tourmaline good substitute for blue topaz and sapphire.