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Dravite
Dravite

Anatase
Anatase



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Dravite
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Anatase

Dravite and Anatase Optical Properties

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Optical Properties

Luster

Vitreous
Adamantine

Pleochroism

Very strong: pale yellow colorless
Weak

Dispersion

0.020.21
0.005 1
👆🏻

Transparency

Transparent
Transparent

Refractive Index

1.614-1.6662.488-2.562
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m
tetragonal

Birefringence

0.014-0.0320.073
0 0.296
👆🏻

Clarity

Transparent
Transparent

Dravite and Anatase Optic Character

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

Dravite and Anatase Transparency

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