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Microcline
Microcline

Oligoclase
Oligoclase



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Microcline and Oligoclase Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Vitreous
1.2 Pleochroism
WeakMichael O’Donoghue
Not Available
1.3 Dispersion
Albite Optical ..
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Fluorite Optical Properties
1.4 Transparency
Translucent
Gemmological Tables (2004)
1.5 Refractive Index
1.514-1.539
1.538-1.550
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Triclinic Pinacoidal H-M Symbol ( 1) Space Group: C1
Not Available
1.8 Birefringence
0.008-0.010
0.010
1.9 Clarity
Translucent
TransparentUlrich Henn and Claudio C. Milisenda

Microcline and Oligoclase Optic Character

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

Similar to their colors, Microcline and Oligoclase 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.