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Amethyst and Ametrine Optical Properties


Ametrine and Amethyst Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous   

Pleochroism
None   
Not Available   

Dispersion
0.01   
27
0.01   
27

Transparency
Transparent, Transparent to translucent   
Transparent   

Refractive Index
1.544-1.553   
1.544-1.553   

Optic Character
Not Available   
Not Available   

Crystal System
Trigonal   
Trigonal   

Birefringence
0.009   
0.009   

Clarity
Transparent   
Transparent   

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<< Physical Properties

Amethyst and Ametrine Optic Character

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

Similar to their colors, Amethyst and Ametrine 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, Amethyst is Transparent and Transparent to translucent while Amethyst is Transparent and Transparent to translucent in appearance.

Semi Precious

Semi Precious


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