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Amethyst and Rubellite Optical Properties


Rubellite and Amethyst Optical Properties


Optical Properties

Luster
Vitreous   
Not Available   

Pleochroism
None   
Strong: dark red pinkish-redHerve Nicolas Lazzarelli   

Dispersion
0.01   
27
0.02   
22

Transparency
Transparent, Transparent to translucent   
Transparent, Translucent   

Refractive Index
1.544-1.553   
1.614-1.666   

Optic Character
Not Available   
Not Available   

Crystal System
Trigonal   
Not Available   

Birefringence
0.009   
0.014-0.040   

Clarity
Transparent   
Transparent   

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Amethyst and Rubellite Optic Character

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

Similar to their colors, Amethyst and Rubellite 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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