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Steatite and Achroite Optical Properties


Achroite and Steatite Optical Properties


Optical Properties

Luster
Not Available   
Not Available   

Pleochroism
Not Available   
Not Available   

Dispersion
Not Available   
0.02   
22

Transparency
Gemmological Tables (2004)   
Transparent, Translucent   

Refractive Index
1.539-1.596   
1.614-1.666   

Optic Character
Not Available   
Not Available   

Crystal System
Not Available   
Not Available   

Birefringence
0.046-0.050   
0.014-0.040   

Clarity
OpaqueUlrich Henn and Claudio C. Milisenda   
Transparent   

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Steatite and Achroite Optic Character

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

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Steatite and Achroite Transparency

Similar to their colors, Steatite and Achroite 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.

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