7mm Blue Zircon Pendant w/ ChainNot to be confused with "Cubic zirconia, or Zirconia", Zircon is a natural tetragonal crystal that forms in silicate melts, in the Earth's crust and mantle. Although Zircon can be found in color ranges from clear to varied color depths of blue, red, golden yellow and browns, the actual word Zircon originated from the Persian word "Zargun" which means "gold hued". From that word, it is translated to the German word Zirkon, then Zircon in English.