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Sapphire
Sapphire

Axinite
Axinite



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Sapphire
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Axinite

Sapphire and Axinite Optical Properties

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Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Vitreous, Adamantine
Strong
0.02
Transparent, Translucent, Transparent to opaque
1.762-1.788
-
Trigonal
0.008-0.009
Transparent
 
Vitreous
Strong
0.02
-
1.656-1.704
Biaxial/+
Triclinic
0.009-0.012
TransparentUlrich Henn and Claudio C. Milisenda

Sapphire and Axinite Optic Character

Sapphire and Axinite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Sapphire Vs Axinite 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 Sapphire and Axinite 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.

Sapphire and Axinite Transparency

Similar to their colors, Sapphire and Axinite 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, Sapphire is while Sapphire is in appearance.