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Tugtupite
Tugtupite

Cassiterite
Cassiterite



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Tugtupite
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Cassiterite

Tugtupite and Cassiterite Optical Properties

Optical Properties

Luster

-
Adamantine, Greasy

Pleochroism

ModerateArthur Thomas
Pleochroic haloes have been observed. Dichroic in yellow

Dispersion

0.010.07
0.005 1
👆🏻

Transparency

OpaqueHerve Nicolas Lazzarelli
Transparent, Translucent

Refractive Index

1.494-1.5041.990-2.105
1 3.25
👆🏻

Optic Character

-
-

Crystal System

tetragonal
tetragonal

Birefringence

0.0080.096-0.098
0 0.296
👆🏻

Clarity

OpaqueHerve Nicolas Lazzarelli
Transparent

Tugtupite and Cassiterite Optic Character

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

Tugtupite and Cassiterite Transparency

Similar to their colors, Tugtupite 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, Tugtupite is OpaqueHerve Nicolas Lazzarelli while Tugtupite is OpaqueHerve Nicolas Lazzarelli in appearance.