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Anorthoclase
Anorthoclase

Beryllonite
Beryllonite



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Anorthoclase
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Beryllonite

Anorthoclase and Beryllonite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Pearly
Vitreous, Adamantine, Pearly
1.2 Pleochroism
WeakMichael O’Donoghue
AbsentWalter Schumann
1.3 Dispersion
NA0.01
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.518-1.5341.552-1.562
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
monoclinic
1.8 Birefringence
0.006-0.0080.009
Achroite
0 0.296
1.9 Clarity
Translucent
TransparentUlrich Henn and Claudio C. Milisenda

Anorthoclase and Beryllonite Optic Character

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

Similar to their colors, Anorthoclase and Beryllonite 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.