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Astrophyllite
Astrophyllite

Povondraite
Povondraite



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Astrophyllite
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Povondraite

Astrophyllite and Povondraite Optical Properties

1 Optical Properties
1.1 Luster
Greasy, Pearly
Resinous
1.2 Pleochroism
Strong: X= deep red-orange Y= orange-yellow Z= lemon-yellow
Strong: yellow-brown
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent
Translucent
1.5 Refractive Index
1.678-1.758Not Available
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Triclinic
Not Available
1.8 Birefringence
0.050Not Available
Achroite
0 0.296
1.9 Clarity
Translucent
Translucent

Astrophyllite and Povondraite Optic Character

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

Similar to their colors, Astrophyllite and Povondraite 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.