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Stichtite and Sugilite Optical Properties


Sugilite and Stichtite Optical Properties


Optical Properties

Luster
Waxy, Resinous   
Vitreous   

Pleochroism
Weak   
Weak   

Dispersion
Not Available   
Not Available   

Transparency
Translucent   
Translucent   

Refractive Index
1.516-1.544   
1.607-1.612   

Optic Character
Not Available   
Not Available   

Crystal System
Trigonal   
Hexagonal   

Birefringence
0.026   
0.003   

Clarity
Translucent   
Translucent   

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Stichtite and Sugilite Optic Character

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

Similar to their colors, Stichtite and Sugilite 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, Stichtite is Translucent while Stichtite is Translucent in appearance.

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