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Adularia
Adularia

Cassiterite
Cassiterite



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Adularia
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Cassiterite

Adularia and Cassiterite Optical Properties

1 Optical Properties
1.1 Luster
Not Available
Adamantine, Greasy
1.2 Pleochroism
Not Available
Pleochroic haloes have been observed. Dichroic in yellow
1.3 Dispersion
NA0.07
Fluorite Optical Properties
0.007 1
1.4 Transparency
TransparentArthur Thomas, Gemstones (2009)
Transparent, Translucent
1.5 Refractive Index
1.518-1.5361.990-2.105
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
tetragonal
1.8 Birefringence
0.005-0.0080.096-0.098
Achroite
0 0.296
1.9 Clarity
TransparentArthur Thomas
Transparent

Adularia and Cassiterite Optic Character

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

Adularia and Cassiterite Transparency

Similar to their colors, Adularia 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, Adularia is Gemstones (2009) and TransparentArthur Thomas while Adularia is Gemstones (2009) and TransparentArthur Thomas in appearance.