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Seraphinite
Seraphinite

Dravite
Dravite



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Seraphinite
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Dravite

Seraphinite and Dravite Optical Properties

Optical Properties

Luster

Pearly, Greasy
Vitreous

Pleochroism

-
Very strong: pale yellow colorless

Dispersion

0.010.02
0.005 1
👆🏻

Transparency

Transparent
Transparent

Refractive Index

1.571-1.5971.614-1.666
1 3.25
👆🏻

Optic Character

Biaxial/+
-

Crystal System

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

Birefringence

-99990.014-0.032
0 0.296
👆🏻

Clarity

Transparent
Transparent

Seraphinite and Dravite Optic Character

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

Seraphinite and Dravite Transparency

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