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Sugilite
Sugilite

Chromite
Chromite



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Sugilite
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Chromite

Sugilite and Chromite Optical Properties

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Optical Properties

Luster

Vitreous
-

Pleochroism

Weak
none.

Dispersion

0.020.04
0.005 1
👆🏻

Transparency

Translucent
-

Refractive Index

1.607-1.6122.08-2.16
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Hexagonal
Isometric

Birefringence

0.003-9999
0 0.296
👆🏻

Clarity

Translucent
-

Sugilite and Chromite Optic Character

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

Sugilite and Chromite Transparency

Similar to their colors, Sugilite and Chromite 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, Sugilite is Translucent while Sugilite is Translucent in appearance.