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Sphalerite
Sphalerite

Scheelite
Scheelite



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Sphalerite
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Scheelite

Sphalerite and Scheelite Optical Properties

1 Optical Properties
1.1 Luster
Adamantine
Vitreous, Adamantine
1.2 Pleochroism
AbsentWalter Schumann
Definite dichoric in yellow (yellow to orange-brown)
1.3 Dispersion
0.160.04
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Translucent
Translucent, Transparent
1.5 Refractive Index
2.368-2.3711.918-1.936
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Isometric
tetragonal
1.8 Birefringence
Not Available0.016
Achroite
0 0.296
1.9 Clarity
Transparent
Translucent

Sphalerite and Scheelite Optic Character

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

Sphalerite and Scheelite Transparency

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