VS
Name
—
Na₄[Mg₈Cr³⁺₄]O₄[Si₁₂O₃₆]
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Triclinic
Crystal system
—
5.5–7
Mohs hardness
—
3.38
Specific gravity
—
—
Streak
—
—
Luster
—
—
Cleavage
—
P-1
Space group
—
Sapphirine
Structural group
—
Kvi · Approved
IMA
—
1967
Named in
—
Deep emerald-green
Typical colors
—
Na · Mg · Cr · O · Si
Elements
—