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Boleite
Boleite

Iolite
Iolite



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Boleite
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Iolite

Boleite and Iolite Optical Properties

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Optical Properties

Luster

Vitreous, Pearly
Vitreous

Pleochroism

-
-

Dispersion

0.070.02
0.005 1
👆🏻

Transparency

Transparent
Transparent, Translucent, Transparent to translucent

Refractive Index

2.051.52-1.56
1 3.25
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Optic Character

-
-

Crystal System

Isometric
Orthorhombic

Birefringence

0.010-9999
0 0.296
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Clarity

Transparent
Transparent to translucent

Boleite and Iolite Optic Character

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

Boleite and Iolite Transparency

Similar to their colors, Boleite and Iolite 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, Boleite is Transparent while Boleite is Transparent in appearance.