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Anorthoclase
Anorthoclase

Apophyllite
Apophyllite



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Anorthoclase
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Apophyllite

Anorthoclase and Apophyllite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Pearly
Vitreous, Pearly
1.2 Pleochroism
WeakMichael O’Donoghue
Dichroic (colorless)
1.3 Dispersion
Albite Optical ..
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Fluorite Optical Properties
1.4 Transparency
Translucent
Transparent, Translucent
1.5 Refractive Index
1.518-1.534
1.530-1.543
1.6 Optic Character
Not Available
Uniaxial/-
1.7 Crystal System
Triclinic Pinacoidal H-M Symbol ( 1) Space Group: C1
tetragonal
1.8 Birefringence
0.006-0.008
0.000-0.003
1.9 Clarity
Translucent
Transparent

Anorthoclase and Apophyllite Optic Character

Anorthoclase and Apophyllite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Anorthoclase and Apophyllite 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 Anorthoclase and Apophyllite 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. Apophyllite has Uniaxial/- character.

Anorthoclase and Apophyllite Transparency

Similar to their colors, Anorthoclase and Apophyllite 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, Anorthoclase is Translucent while Anorthoclase is Translucent in appearance.