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Pyrargyrite
Pyrargyrite

Andalusite
Andalusite



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Pyrargyrite
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Andalusite

Pyrargyrite and Andalusite Optical Properties

1 Optical Properties
1.1 Luster
Adamantine
Vitreous, Greasy
1.2 Pleochroism
Distinct
strongly trichroic
1.3 Dispersion
NA0.02
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent
Transparent, Translucent
1.5 Refractive Index
2.881-3.0841.627-1.650
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Trigonal
Orthorhombic
1.8 Birefringence
0.2030.009-0.010
Achroite
0 0.296
1.9 Clarity
Translucent
Transparent

Pyrargyrite and Andalusite Optic Character

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

Pyrargyrite and Andalusite Transparency

Similar to their colors, Pyrargyrite and Andalusite 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, Pyrargyrite is Translucent while Pyrargyrite is Translucent in appearance.