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Scheelite
Scheelite

Phenakite
Phenakite



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Scheelite
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Phenakite

Scheelite and Phenakite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Adamantine
Vitreous
1.2 Pleochroism
Definite dichoric in yellow (yellow to orange-brown)
Distinct: colorless orangy-yellowHerve Nicolas Lazzarelli
1.3 Dispersion
0.040.02
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent, Transparent
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.918-1.9361.650-1.695
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
tetragonal
Trigonal
1.8 Birefringence
0.0160.016
Achroite
0 0.296
1.9 Clarity
Translucent
TransparentUlrich Henn and Claudio C. Milisenda

Scheelite and Phenakite Optic Character

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

Similar to their colors, Scheelite and Phenakite 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.