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Dravite
Dravite

Aegirine
Aegirine



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Dravite
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Aegirine

Dravite and Aegirine Optical Properties

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Optical Properties

Luster

Vitreous
Vitreous, Resinous

Pleochroism

Very strong: pale yellow colorless
Emerald green

Dispersion

0.020.01
0.005 1
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Transparency

Transparent
-

Refractive Index

1.614-1.6661.720-1.778
1 3.25
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Optic Character

-
-

Crystal System

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

Birefringence

0.014-0.0320.037-0.061
0 0.296
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Clarity

Transparent
-

Dravite and Aegirine Optic Character

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

Similar to their colors, Dravite and Aegirine 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.