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Scheelite
Scheelite

Astrophyllite
Astrophyllite



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Scheelite
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Astrophyllite

Scheelite and Astrophyllite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Adamantine
Greasy, Pearly
1.2 Pleochroism
Definite dichoric in yellow (yellow to orange-brown)
Strong: X= deep red-orange Y= orange-yellow Z= lemon-yellow
1.3 Dispersion
0.04NA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent, Transparent
Translucent
1.5 Refractive Index
1.918-1.9361.678-1.758
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
tetragonal
Triclinic
1.8 Birefringence
0.0160.050
Achroite
0 0.296
1.9 Clarity
Translucent
Translucent

Scheelite and Astrophyllite Optic Character

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

Similar to their colors, Scheelite and Astrophyllite 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.