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Benitoite
Benitoite

Cacoxenite
Cacoxenite



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Benitoite
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Cacoxenite

Benitoite and Cacoxenite Optical Properties

Optical Properties

Luster

Vitreous
Silky

Pleochroism

O = colorless; E = purple
visible: O = Pale yellow E = Canary yellow to yellow orange

Dispersion

0.040.03
0.005 1
👆🏻

Transparency

Transparent
-

Refractive Index

1.757-1.8041.575-1.585
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Hexagonal
Hexagonal

Birefringence

0.047-9999
0 0.296
👆🏻

Clarity

Transparent
-

Benitoite and Cacoxenite Optic Character

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

Benitoite and Cacoxenite Transparency

Similar to their colors, Benitoite and Cacoxenite 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, Benitoite is Transparent while Benitoite is Transparent in appearance.