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Star Ruby
Star Ruby

Chrysoberyl
Chrysoberyl



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X
Star Ruby
X
Chrysoberyl

Star Ruby and Chrysoberyl Optical Properties

Optical Properties

Luster

-
Vitreous

Pleochroism

-
X = red; Y = yellow-orange; Z = emerald-green

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

Transparent, Translucent
Transparent, Translucent, Transparent to translucent

Refractive Index

1.757-1.7801.746-1.763
1 3.25
👆🏻

Optic Character

-
Biaxial/+

Crystal System

-
Orthorhombic

Birefringence

0.007-0.0100.007-0.013
0 0.296
👆🏻

Clarity

Transparent
Transparent

Star Ruby and Chrysoberyl Optic Character

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

Star Ruby and Chrysoberyl Transparency

Similar to their colors, Star Ruby and Chrysoberyl 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.