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Cassiterite
Cassiterite

Adularia
Adularia



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Cassiterite
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Adularia

Cassiterite and Adularia Optical Properties

1 Optical Properties
1.1 Luster
Adamantine, Greasy
Not Available
1.2 Pleochroism
Pleochroic haloes have been observed. Dichroic in yellow
Not Available
1.3 Dispersion
0.07NA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Translucent
TransparentArthur Thomas, Gemstones (2009)
1.5 Refractive Index
1.990-2.1051.518-1.536
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
tetragonal
Not Available
1.8 Birefringence
0.096-0.0980.005-0.008
Achroite
0 0.296
1.9 Clarity
Transparent
TransparentArthur Thomas

Cassiterite and Adularia Optic Character

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

Similar to their colors, Cassiterite and Adularia 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.