Zircon is a beautiful gemstone with a high refractive index and strong dispersion. (It should not be confused with Cubic Zirconia because the two are completely unrelated.) Zircon exhibits a range of colors including yellow, brown, orange, red, violet, blue, green and colorless. On Mohs’ scale of hardness, it is 6.5-7. It has a vitreous to brilliant luster and sources include Burma (Myanmar), Cambodia, Sri Lanka, Thailand, Australia, Brazil, Korea, Madagascar, Mozambique, Nigeria, Tanzania and Vietnam.