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Astrophyllite
Astrophyllite

Scheelite
Scheelite



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Astrophyllite
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Scheelite

Astrophyllite and Scheelite Optical Properties

Optical Properties

Luster

Greasy, Pearly
Vitreous, Adamantine

Pleochroism

Strong: X= deep red-orange Y= orange-yellow Z= lemon-yellow
Definite dichoric in yellow (yellow to orange-brown)

Dispersion

0.120.04
0.005 1
👆🏻

Transparency

Translucent
Translucent, Transparent

Refractive Index

1.678-1.7581.918-1.936
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Triclinic
tetragonal

Birefringence

0.0500.016
0 0.296
👆🏻

Clarity

Translucent
Translucent

Astrophyllite and Scheelite Optic Character

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

Astrophyllite and Scheelite Transparency

Similar to their colors, Astrophyllite 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, Astrophyllite is Translucent while Astrophyllite is Translucent in appearance.