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Dravite
Dravite

Linarite
Linarite



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Dravite
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Linarite

Dravite and Linarite Optical Properties

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Optical Properties

Luster

Vitreous
Sub-Adamantine, Vitreous

Pleochroism

Very strong: pale yellow colorless
X = pale blue; Y = blue; Z = Prussian blue

Dispersion

0.020.05
0.005 1
👆🏻

Transparency

Transparent
Transparent

Refractive Index

1.614-1.6661.809-1.859
1 3.25
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Optic Character

-
-

Crystal System

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

Birefringence

0.014-0.0320.050
0 0.296
👆🏻

Clarity

Transparent
Transparent

Dravite and Linarite Optic Character

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

Similar to their colors, Dravite and Linarite 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.