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Scheelite
Scheelite

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Covellite



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Scheelite
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Covellite

Scheelite and Covellite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Adamantine
Resinous
1.2 Pleochroism
Definite dichoric in yellow (yellow to orange-brown)
Marked
1.3 Dispersion
Albite Optical ..
0.04
Rank: 12 (Overall)
Not Available
Rank: N/A (Overall)
Fluorite Optical Properties
1.4 Transparency
Translucent, Transparent
OpaqueAnthony et al, Handbook of mineralogy (2001) More from other references
1.5 Refractive Index
1.918-1.936
1.45-2.62
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
tetragonal
Hexagonal
1.8 Birefringence
0.016
Not Available
1.9 Clarity
Translucent
OpaqueAnthony et al

Scheelite and Covellite Optic Character

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

Scheelite and Covellite Transparency

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