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Clinochlore
Clinochlore

Covellite
Covellite



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Clinochlore
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Covellite

Clinochlore and Covellite Optical Properties

1 Optical Properties
1.1 Luster
Pearly, Greasy
Resinous
1.2 Pleochroism
Distinct: light yellow-green to light bluE
Marked
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent
OpaqueAnthony et al, Handbook of mineralogy (2001) More from other references
1.5 Refractive Index
1.571-1.5971.45-2.62
Agate Opal
1 3.25
1.6 Optic Character
Biaxial/+
Not Available
1.7 Crystal System
Monoclinic Prismatic H-M Symbol (2/m) Space Group: C 2/m
Hexagonal
1.8 Birefringence
Not AvailableNot Available
Achroite
0 0.296
1.9 Clarity
Transparent
OpaqueAnthony et al

Clinochlore and Covellite Optic Character

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

Similar to their colors, Clinochlore and Covellite 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.