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Augite
Augite

Sapphire
Sapphire



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Augite
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Sapphire

Augite and Sapphire Optical Properties

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Optical Properties

Luster

Vitreous, Resinous
Vitreous, Adamantine

Pleochroism

Pale green
Strong

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

Transparent, Translucent
Transparent, Translucent, Transparent to opaque

Refractive Index

1.671-1.7741.762-1.788
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Monoclinic Prismatic H-M Symbol (2/m) Space Group: C 2/c
Trigonal

Birefringence

-99990.008-0.009
0 0.296
👆🏻

Clarity

Transparent
Transparent

Augite and Sapphire Optic Character

Augite and Sapphire optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Augite and Sapphire Physical Properties like crystallographic symmetry, pleochroism,etc. in the crystal. Some of the optical properties are refractive index, luster, optic character, pleochroism etc. Prominent among these is Augite and Sapphire optic character. You might have noticed your gemologist rotating the gemstone while testing it. Rotating a gemstone along its optic axis helps in determining its optic character.

Augite and Sapphire Transparency

Similar to their colors, Augite and Sapphire transparency can also be used as criteria for their primary identification. Although transparency cannot be the only criteria for gemstone identification, it can efficiently used in gemstone grading. Talking about their transparency, Augite is Transparent and Translucent while Augite is Transparent and Translucent in appearance.