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Cassiterite
Cassiterite

Augelite
Augelite



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Cassiterite
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Augelite

Cassiterite and Augelite Optical Properties

1 Optical Properties
1.1 Luster
Adamantine, Greasy
Pearly
1.2 Pleochroism
Pleochroic haloes have been observed. Dichroic in yellow
NilArthur Thomas
1.3 Dispersion
0.07NA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Translucent
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.990-2.1051.570-1.591
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
tetragonal
1.8 Birefringence
0.096-0.0980.020-0.021
Achroite
0 0.296
1.9 Clarity
Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Cassiterite and Augelite Optic Character

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

Cassiterite and Augelite Transparency

Similar to their colors, Cassiterite and Augelite 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, Cassiterite is Translucent and Transparent while Cassiterite is Translucent and Transparent in appearance.