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Chrome Tourmaline
Chrome Tourmaline

Covellite
Covellite



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Chrome Tourmaline
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Covellite

Chrome Tourmaline and Covellite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Resinous
1.2 Pleochroism
Not Available
Marked
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Translucent
OpaqueAnthony et al, Handbook of mineralogy (2001) More from other references
1.5 Refractive Index
1.614-1.6661.45-2.62
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Hexagonal
Hexagonal
1.8 Birefringence
0.014-0.040Not Available
Achroite
0 0.296
1.9 Clarity
Transparent
OpaqueAnthony et al

Chrome Tourmaline and Covellite Optic Character

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

Chrome Tourmaline and Covellite Transparency

Similar to their colors, Chrome Tourmaline 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, Chrome Tourmaline is Translucent and Transparent while Chrome Tourmaline is Translucent and Transparent in appearance.