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Steatite
Steatite

Dioptase
Dioptase



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Steatite
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Dioptase

Steatite and Dioptase Optical Properties

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Optical Properties

Luster

-
Vitreous

Pleochroism

-
Weak; dark emerald green

Dispersion

0.010.04
0.005 1
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Transparency

-
TranslucentHerve Nicolas Lazzarelli

Refractive Index

1.539-1.5961.644-1.720
1 3.25
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Optic Character

-
-

Crystal System

-
Trigonal

Birefringence

0.046-0.0500.051-0.053
0 0.296
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Clarity

OpaqueUlrich Henn and Claudio C. Milisenda
TranslucentHerve Nicolas Lazzarelli

Steatite and Dioptase Optic Character

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

Similar to their colors, Steatite and Dioptase 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.