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Steatite
Steatite

Cordierite
Cordierite



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Steatite
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Cordierite

Steatite and Cordierite Optical Properties

1 Optical Properties
1.1 Luster
Not Available
Greasy, Vitreous
1.2 Pleochroism
Not Available
X = pale yellow
1.3 Dispersion
Albite Optical ..
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Fluorite Optical Properties
1.4 Transparency
Gemmological Tables (2004)
Not Available
1.5 Refractive Index
1.539-1.596
Not Available
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
Orthorhombic
1.8 Birefringence
0.046-0.050
Not Available
1.9 Clarity
OpaqueUlrich Henn and Claudio C. Milisenda
Not Available

Steatite and Cordierite Optic Character

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

Similar to their colors, Steatite and Cordierite 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.