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Titanite
Titanite

Cassiterite
Cassiterite



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X
Titanite
X
Cassiterite

Titanite and Cassiterite Optical Properties

Optical Properties

Luster

Subadamantine, Resinous
Adamantine, Greasy

Pleochroism

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

Dispersion

0.050.07
0.005 1
👆🏻

Transparency

-
Transparent, Translucent

Refractive Index

1.885-1.9901.990-2.105
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
tetragonal

Birefringence

0.105-0.1350.096-0.098
0 0.296
👆🏻

Clarity

-
Transparent

Titanite and Cassiterite Optic Character

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

Titanite and Cassiterite Transparency

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