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Scheelite
Scheelite

Dallasite
Dallasite



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Scheelite
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Dallasite

Scheelite and Dallasite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Adamantine
Not Available
1.2 Pleochroism
Definite dichoric in yellow (yellow to orange-brown)
Not Available
1.3 Dispersion
0.04NA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent, Transparent
Not Available
1.5 Refractive Index
1.918-1.9361.540
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
tetragonal
Not Available
1.8 Birefringence
0.0160.008-0.010
Achroite
0 0.296
1.9 Clarity
Translucent
Not Available

Scheelite and Dallasite Optic Character

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

Similar to their colors, Scheelite and Dallasite 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.