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Smithsonite
Smithsonite

Cassiterite
Cassiterite



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Smithsonite
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Cassiterite

Smithsonite and Cassiterite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Pearly
Adamantine, Greasy
1.2 Pleochroism
AbsentWalter Schumann
Pleochroic haloes have been observed. Dichroic in yellow
1.3 Dispersion
0.010.07
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent
Transparent, Translucent
1.5 Refractive Index
1.620-1.8501.990-2.105
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Trigonal
tetragonal
1.8 Birefringence
0.223-0.2270.096-0.098
Achroite
0 0.296
1.9 Clarity
Translucent
Transparent

Smithsonite and Cassiterite Optic Character

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

Smithsonite and Cassiterite Transparency

Similar to their colors, Smithsonite 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, Smithsonite is Translucent while Smithsonite is Translucent in appearance.