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Steatite
Steatite

Cassiterite
Cassiterite



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Steatite
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Cassiterite

Steatite and Cassiterite Optical Properties

Optical Properties

Luster

-
Adamantine, Greasy

Pleochroism

-
Pleochroic haloes have been observed. Dichroic in yellow

Dispersion

0.010.07
0.005 1
👆🏻

Transparency

-
Transparent, Translucent

Refractive Index

1.539-1.5961.990-2.105
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
tetragonal

Birefringence

0.046-0.0500.096-0.098
0 0.296
👆🏻

Clarity

OpaqueUlrich Henn and Claudio C. Milisenda
Transparent

Steatite and Cassiterite Optic Character

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

Steatite and Cassiterite Transparency

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