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Steatite
Steatite

Agrellite
Agrellite



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Steatite
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Agrellite

Steatite and Agrellite Optical Properties

Optical Properties

Luster

-
Pearly

Pleochroism

-
colorless.

Dispersion

0.010.01
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.539-1.5961.567
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
Triclinic

Birefringence

0.046-0.0500.014
0 0.296
👆🏻

Clarity

OpaqueUlrich Henn and Claudio C. Milisenda
-

Steatite and Agrellite Optic Character

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

Similar to their colors, Steatite and Agrellite 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.