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Sanidine
Sanidine

Benitoite
Benitoite



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Sanidine
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Benitoite

Sanidine and Benitoite Optical Properties

Optical Properties

Luster

-
Vitreous

Pleochroism

-
O = colorless; E = purple

Dispersion

0.010.04
0.005 1
👆🏻

Transparency

Transparent
Transparent

Refractive Index

1.518-1.5361.757-1.804
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
Hexagonal

Birefringence

0.005-0.0080.047
0 0.296
👆🏻

Clarity

Transparent
Transparent

Sanidine and Benitoite Optic Character

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

Sanidine and Benitoite Transparency

Similar to their colors, Sanidine 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, Sanidine is Transparent while Sanidine is Transparent in appearance.