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Benitoite
Benitoite

Turquoise
Turquoise



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Benitoite
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Turquoise

Benitoite and Turquoise Optical Properties

Optical Properties

Luster

Vitreous
Waxy

Pleochroism

O = colorless; E = purple
Weak

Dispersion

0.040.03
0.005 1
👆🏻

Transparency

Transparent
Translucent, Opaque

Refractive Index

1.757-1.8041.610-1.650
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Hexagonal
Triclinic

Birefringence

0.0470.040
0 0.296
👆🏻

Clarity

Transparent
Translucent

Benitoite and Turquoise Optic Character

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

Similar to their colors, Benitoite and Turquoise 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.