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Star Ruby
Star Ruby

Dravite
Dravite



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Star Ruby
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Dravite

Star Ruby and Dravite Optical Properties

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Optical Properties

Luster

-
Vitreous

Pleochroism

-
Very strong: pale yellow colorless

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

Transparent, Translucent
Transparent

Refractive Index

1.757-1.7801.614-1.666
1 3.25
👆🏻

Optic Character

-
-

Crystal System

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Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m

Birefringence

0.007-0.0100.014-0.032
0 0.296
👆🏻

Clarity

Transparent
Transparent

Star Ruby and Dravite Optic Character

Star Ruby and Dravite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Star Ruby and Dravite 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 Star Ruby and Dravite 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.

Star Ruby and Dravite Transparency

Similar to their colors, Star Ruby and Dravite 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, Star Ruby is Transparent and Translucent while Star Ruby is Transparent and Translucent in appearance.