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Ruby (Al2O3:Cr3+)

Ruby crystals (Al2O3:Cr3+) are grown by Czochralsky technique. It allows to obtain high quality samples and to manipulate
their color purposefully – from light-red to pigeon’s blood color. Laboratory research studies verified these crystals to be the
complete analog of naturally occurring ruby.

PROPERTIES

Molecular weight

 101,94
Crystal lattice parameters, Angstroem unit a = 4.748c = 12.957
Refraction indexes Nm = 1.767Np = 1.759
Birefringence 0.0082
Density, g/cm3 3.98
Moh’s hardness

9
Melting point,oC 2050
Syngony triangular
Axial characteristics monoaxial
Cr2O3
concentration,mass.%

0,5 – 4,0
Colour Pigeon blood