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The glass contains approximately 50 to 70% silica. Silica glass is one of the fiber types which are processed by treating fiberglass in an acid bath. The quartz fibers are made from natural quartz crystals which contain 99.9% silica. This made it possible that the ordinary fiberglass, high silica and quartz fibers are produced in a wide range of fiber diameter. Pure quartz crystals are very rare in-spite of their ample abundance commercially. Quartz fibers can withstand high temperatures, while silica cannot [17]. Quartz fiber possesses highly elasticity and can be easily stretched to 1% of their total length before the break point. Both the silica and quartz fibers are moisture and acid resistant. They have good insulting properties and high melting point up to 1600 °C. Also, due to low thermal expansion coefficient, they can easily withstand high temperatures.