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Steatite
Steatite

Cassiterite
Cassiterite



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Steatite
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Cassiterite

Steatite and Cassiterite Optical Properties

1 Optical Properties
1.1 Luster
Not Available
Adamantine, Greasy
1.2 Pleochroism
Not Available
Pleochroic haloes have been observed. Dichroic in yellow
1.3 Dispersion
NA0.07
Fluorite Optical Properties
0.007 1
1.4 Transparency
Gemmological Tables (2004)
Transparent, Translucent
1.5 Refractive Index
1.539-1.5961.990-2.105
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
tetragonal
1.8 Birefringence
0.046-0.0500.096-0.098
Achroite
0 0.296
1.9 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 Gemmological Tables (2004) while Steatite is Gemmological Tables (2004) in appearance.