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Fire Opal and Sulphur Optical Properties


Sulphur and Fire Opal Optical Properties


Optical Properties

Luster
Not Available   
Not Available   

Pleochroism
AbsentWalter Schumann   
Not Available   

Dispersion
None   
Not Available   

Transparency
Transparent, Translucent   
TranslucentWalter Schumann, Gemstones of the world (2001)   

Refractive Index
1.370-1.470   
1.958-2.245   

Optic Character
Not Available   
Not Available   

Crystal System
Amorphous   
Not Available   

Birefringence
Not Available   
0.291   

Clarity
Transparent   
TranslucentWalter Schumann   

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Fire Opal and Sulphur Optic Character

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

Similar to their colors, Fire Opal and Sulphur 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, Fire Opal is Translucent and Transparent while Fire Opal is Translucent and Transparent in appearance.

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Red Gemstones


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