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Euclase
Euclase

Cassiterite
Cassiterite



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Euclase
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Cassiterite

Euclase and Cassiterite Optical Properties

Optical Properties

Luster

Vitreous
Adamantine, Greasy

Pleochroism

Weak: colorless-(greenish) yellow
Pleochroic haloes have been observed. Dichroic in yellow

Dispersion

0.020.07
0.005 1
👆🏻

Transparency

-
Transparent, Translucent

Refractive Index

1.650-1.6771.990-2.105
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/a
tetragonal

Birefringence

0.019-0.0250.096-0.098
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
Transparent

Euclase and Cassiterite Optic Character

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

Euclase and Cassiterite Transparency

Similar to their colors, Euclase 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, Euclase is while Euclase is in appearance.