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Microcline and Topaz Optical Properties


Topaz and Microcline Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous   

Pleochroism
WeakMichael O’Donoghue   
Weak   

Dispersion
Not Available   
0.01   
26

Transparency
Translucent   
Transparent   

Refractive Index
1.514-1.539   
1.606-1.644   

Optic Character
Not Available   
Not Available   

Crystal System
Triclinic Pinacoidal H-M Symbol ( 1) Space Group: C1   
Orthorhombic   

Birefringence
0.008-0.010   
0.008-0.011   

Clarity
Translucent   
TransparentUlrich Henn and Claudio C. Milisenda   

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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.

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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.

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