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Star Sapphire
Star Sapphire

Eosphorite
Eosphorite



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Star Sapphire
X
Eosphorite

Star Sapphire and Eosphorite Optical Properties

Optical Properties

Luster

-
Vitreous, Resinous

Pleochroism

-
Visible: X = yellow; Y = pink; Z = pale pink to colorless

Dispersion

0.020.01
0.005 1
👆🏻

Transparency

Transparent, Translucent
Transparent

Refractive Index

1.758-1.7801.639-1.672
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
Orthorhombic

Birefringence

0.007-0.0100.029-0.032
0 0.296
👆🏻

Clarity

Transparent
Transparent

Star Sapphire and Eosphorite Optic Character

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

Similar to their colors, Star Sapphire and Eosphorite 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 Sapphire is Transparent and Translucent while Star Sapphire is Transparent and Translucent in appearance.