Zircon
Mohs Hardness - 6.5-7 - Found in - Sri Lanka, Cambodia, Thailand, France, Norway, Tanzania and Australia. History - Zircon’s name was probably derived from the Arabic zar (gold) and gun (color). It is found in Igneous rocks and comes in a variety of colors. The colorless stones closely resemble diamonds, but impurities will produce stones of yellow orange, blue, red, brown, and green. It may be distinguished from diamond by its double refraction and by wear and tear on its facet edges. When first removed from the water, crystals are dull, but take on brilliance after cutting. Blue zircon is most sought after as a gemstone, and many of the more common varieties are heated to turn them blue. It is a source of two rare metals, ziranium and hafnium which are used today in nuclear reactors. Metaphysical - In Middle Ages it was worn by travelers as an amulet for protection from sickness, injury and insomnia. It was believed to provide the wearer with wisdom, honor, and riches, and loss of luster is said to warn of danger. According to legend, Zircon is the stone of Venus and kindles a fire in the heart of its wearer. According to fable, the Zircon makes it's wearer so favored that all his ventures thrived. In modern times, it is thought to help the liver, asthma, lung problems, and stimulate metabolism. It is also said to symbolize healing and helpw the wearer overcome losses, heal mental disturbances and promote common sense.