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Caledonite and Gahnite Optical Properties


Gahnite and Caledonite Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous   

Pleochroism
Weak   
Not Available   

Dispersion
Not Available   
Not Available   

Transparency
Transparent   
Gemmological Tables (2004) More from other references   

Refractive Index
1.818-1.909   
1.790-1.818   

Optic Character
Not Available   
Not Available   

Crystal System
Orthorhombic   
cubic   

Birefringence
0.091   
Not Available   

Clarity
Transparent   
TransparentUlrich Henn and Claudio C. Milisenda   

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Caledonite and Gahnite Optic Character

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

Similar to their colors, Caledonite and Gahnite 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, Caledonite is Transparent while Caledonite is Transparent in appearance.

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