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Anatase
Anatase

Polyhalite
Polyhalite



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Anatase
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Polyhalite

Anatase and Polyhalite Optical Properties

Optical Properties

Luster

Adamantine
Vitreous, Resinous

Pleochroism

Weak
-

Dispersion

0.210.02
0.005 1
👆🏻

Transparency

Transparent
-

Refractive Index

2.488-2.5621.546-1.548
1 3.25
👆🏻

Optic Character

-
-

Crystal System

tetragonal
Triclinic

Birefringence

0.0730.021
0 0.296
👆🏻

Clarity

Transparent
-

Anatase and Polyhalite Optic Character

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

Anatase and Polyhalite Transparency

Similar to their colors, Anatase and Polyhalite 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, Anatase is Transparent while Anatase is Transparent in appearance.