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Kyanite
Kyanite

Hematite
Hematite



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Kyanite
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Hematite

Kyanite and Hematite Optical Properties

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Optical Properties

Luster

Vitreous, Pearly
-

Pleochroism

Trichroic
O = brownish red; E = yellowish red

Dispersion

0.020.05
0.005 1
👆🏻

Transparency

-
OpaqueHerve Nicolas Lazzarelli

Refractive Index

1.71-1.742.690-3.220
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Triclinic
Trigonal

Birefringence

-99990.280
0 0.296
👆🏻

Clarity

-
OpaqueHerve Nicolas Lazzarelli

Kyanite and Hematite Optic Character

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

Kyanite and Hematite Transparency

Similar to their colors, Kyanite and Hematite 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, Kyanite is while Kyanite is in appearance.