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Benitoite
Benitoite

Nepouite
Nepouite



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Benitoite
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Nepouite

Benitoite and Nepouite Optical Properties

Optical Properties

Luster

Vitreous
Waxy, Pearly

Pleochroism

O = colorless; E = purple
Weak

Dispersion

0.040.03
0.005 1
👆🏻

Transparency

Transparent
-

Refractive Index

1.757-1.8041.600-1.630
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Hexagonal
Orthorhombic

Birefringence

0.047-9999
0 0.296
👆🏻

Clarity

Transparent
-

Benitoite and Nepouite Optic Character

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

Similar to their colors, Benitoite and Nepouite 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.