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Astrophyllite
Astrophyllite

Uvarovite
Uvarovite



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Astrophyllite
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Uvarovite

Astrophyllite and Uvarovite Optical Properties

1 Optical Properties
1.1 Luster
Greasy, Pearly
Vitreous
1.2 Pleochroism
Strong: X= deep red-orange Y= orange-yellow Z= lemon-yellow
Not Available
1.3 Dispersion
NA0.01
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent
Translucent
1.5 Refractive Index
1.678-1.7581.87
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Triclinic
cubic
1.8 Birefringence
0.050Not Available
Achroite
0 0.296
1.9 Clarity
Translucent
Translucent

Astrophyllite and Uvarovite Optic Character

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

Similar to their colors, Astrophyllite and Uvarovite 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.