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Augite
Augite

Benitoite
Benitoite



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Augite
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Benitoite

Augite and Benitoite Optical Properties

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Optical Properties

Luster

Vitreous, Resinous
Vitreous

Pleochroism

Pale green
O = colorless; E = purple

Dispersion

0.020.04
0.005 1
👆🏻

Transparency

Transparent, Translucent
Transparent

Refractive Index

1.671-1.7741.757-1.804
1 3.25
👆🏻

Optic Character

-
-

Crystal System

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

Birefringence

-99990.047
0 0.296
👆🏻

Clarity

Transparent
Transparent

Augite and Benitoite Optic Character

Augite and Benitoite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Augite and Benitoite 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 Benitoite 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 Benitoite Transparency

Similar to their colors, Augite and Benitoite 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.