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Microcline
Microcline

Topaz
Topaz



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Microcline
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Topaz

Microcline and Topaz Optical Properties

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Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

-
Weak

Dispersion

0.010.01
0.005 1
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Transparency

Translucent
Transparent

Refractive Index

1.514-1.5391.606-1.644
1 3.25
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Optic Character

-
-

Crystal System

Triclinic Pinacoidal H-M Symbol (1) Space Group: P1
Orthorhombic

Birefringence

0.008-0.0100.008-0.011
0 0.296
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Clarity

Translucent
TransparentUlrich Henn and Claudio C. Milisenda

Microcline and Topaz Optic Character

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

Microcline and Topaz Transparency

Similar to their colors, Microcline and Topaz 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, Microcline is Translucent while Microcline is Translucent in appearance.