Major Attributes of Zirkon

zirkon

ZIRKON, The Ideal Gemstones

Zirconia, it should not be confused with zirconia (ZrO2), a synthetic substitute for diamond. The name comes from the Arabic “zarqun” (ئشقنعى), cinnabar, or the Persian “zargun” (زرگون), gold. Zirkon was first mentioned in 1783 by Abraham Gottlob Werner. Zircon (up to 4.4 billion years ago) is the oldest known mineral of the Earth and the Moon and one of the most abundant minerals in the Earth’s crust. It is produced as a crystallization product in rocks such as granite or pegmatites.

  • Chemical formula: ZrSiO4
  • Mineral class: silicates, germinates, island silicates
  • Crystal system: tetragonal
  • Crystal class: ditetragonal-dipyramidal
  • Color: colorless, yellow, pink, red, brown, green, blue, black
  • Line color: white
  • Mohs hardness: 6.5 to 7.5
  • Density (g / cm³): 4.6 to 4.7
  • Gloss: diamond or greasy
  • Transparency: transparent to opaque
  • Rupture: brittle to dormant
  • Cleavage: imperfect
  • Habitus: prismatic, different
  • Twinning: after 131
  • Refractive index: nω = 1.93 to 1.96; nε = 1.98 to 2.02
  • Birefringence: δ = 0.055
  • Pleochroism: weak to clear
  • Melting point: 3000 ° C
  • Chemical behavior: slightly soluble in hot, concentrated hydrofluoric acid
  • Similar minerals: Chrysoberyl, Demantoid, Rutile, Monazite, Cassiterite, Xenotim, Tita.