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Axinite and Amethyst Optical Properties


Amethyst and Axinite Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous   

Pleochroism
Strong   
None   

Dispersion
0.02   
21
0.01   
27

Transparency
Gemmological Tables (2004) More from other references   
Transparent, Transparent to translucent   

Refractive Index
1.656-1.704   
1.544-1.553   

Optic Character
Biaxial/+   
Not Available   

Crystal System
Triclinic   
Trigonal   

Birefringence
0.009-0.012   
0.009   

Clarity
TransparentUlrich Henn and Claudio C. Milisenda   
Transparent   

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Axinite and Amethyst Optic Character

Axinite and Amethyst optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Axinite and Amethyst 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 Axinite and Amethyst 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. Axinite has Biaxial/+ character.

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Axinite and Amethyst Transparency

Similar to their colors, Axinite and Amethyst 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, Axinite is Gemmological Tables (2004) More from other references while Axinite is Gemmological Tables (2004) More from other references in appearance.

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