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Clinochlore
Clinochlore

Dravite
Dravite



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Clinochlore
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Dravite

Clinochlore and Dravite Optical Properties

Optical Properties

Luster

Pearly, Greasy
Vitreous

Pleochroism

Distinct: light yellow-green to light bluE
Very strong: pale yellow colorless

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

Transparent
Transparent

Refractive Index

1.571-1.5971.614-1.666
1 3.25
👆🏻

Optic Character

Biaxial/+
-

Crystal System

Monoclinic Prismatic H-M Symbol (2/m) Space Group: C 2/m
Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m

Birefringence

-99990.014-0.032
0 0.296
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Clarity

Transparent
Transparent

Clinochlore and Dravite Optic Character

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

Clinochlore and Dravite Transparency

Similar to their colors, Clinochlore 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, Clinochlore is Transparent while Clinochlore is Transparent in appearance.