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Cassiterite
Cassiterite

Titanite
Titanite



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Cassiterite
X
Titanite

Cassiterite and Titanite Optical Properties

Optical Properties

Luster

Adamantine, Greasy
Subadamantine, Resinous

Pleochroism

Pleochroic haloes have been observed. Dichroic in yellow
Strong: X = nearly colorless; Y = yellow to green; Z = red to yellow-orange

Dispersion

0.070.05
0.005 1
👆🏻

Transparency

Transparent, Translucent
-

Refractive Index

1.990-2.1051.885-1.990
1 3.25
👆🏻

Optic Character

-
-

Crystal System

tetragonal
monoclinic

Birefringence

0.096-0.0980.105-0.135
0 0.296
👆🏻

Clarity

Transparent
-

Cassiterite and Titanite Optic Character

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

Similar to their colors, Cassiterite and Titanite 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 Transparent and Translucent while Cassiterite is Transparent and Translucent in appearance.