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Dravite
Dravite

Azurmalachite
Azurmalachite



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Dravite
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Azurmalachite

Dravite and Azurmalachite Optical Properties

Optical Properties

Luster

Vitreous
Vitreous, Silky

Pleochroism

Very strong: pale yellow colorless
-

Dispersion

0.020.07
0.005 1
👆🏻

Transparency

Transparent
Translucent

Refractive Index

1.614-1.6661.655-1.909
1 3.25
👆🏻

Optic Character

-
Biaxial/+

Crystal System

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

Birefringence

0.014-0.0320.108-0.254
0 0.296
👆🏻

Clarity

Transparent
Translucent

Dravite and Azurmalachite Optic Character

Dravite and Azurmalachite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Dravite and Azurmalachite 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 Azurmalachite 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. Azurmalachite has Biaxial/+ character.

Dravite and Azurmalachite Transparency

Similar to their colors, Dravite and Azurmalachite 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.