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Anorthoclase
Anorthoclase

Anhydrite
Anhydrite



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Anorthoclase
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Anhydrite

Anorthoclase and Anhydrite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Pearly
Pearly, Greasy
1.2 Pleochroism
WeakMichael O’Donoghue
For violet varieties
1.3 Dispersion
NA0.01
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent
Transparent
1.5 Refractive Index
1.518-1.5341.570-1.614
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Triclinic Pinacoidal H-M Symbol ( 1) Space Group: C1
Orthorhombic
1.8 Birefringence
0.006-0.0080.042-0.044
Achroite
0 0.296
1.9 Clarity
Translucent
Transparent

Anorthoclase and Anhydrite Optic Character

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

Anorthoclase and Anhydrite Transparency

Similar to their colors, Anorthoclase and Anhydrite 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.