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Orthoclase
Orthoclase

Cassiterite
Cassiterite



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Orthoclase
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Cassiterite

Orthoclase and Cassiterite Optical Properties

Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Vitreous, Pearly
colorless.
0.01
-
1.518-1.536
-
monoclinic
0.0050-0.0060
TransparentUlrich Henn and Claudio C. Milisenda
 
Adamantine, Greasy
Pleochroic haloes have been observed. Dichroic in yellow
0.07
Transparent, Translucent
1.990-2.105
-
tetragonal
0.096-0.098
Transparent

Orthoclase and Cassiterite Optic Character

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

Orthoclase and Cassiterite Transparency

Similar to their colors, Orthoclase and Cassiterite 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, Orthoclase is while Orthoclase is in appearance.