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Star Sapphire
Star Sapphire

Amazonite
Amazonite



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Star Sapphire
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Amazonite

Star Sapphire and Amazonite Optical Properties

Optical Properties

Luster

-
Vitreous

Pleochroism

-
-

Dispersion

0.020.01
0.005 1
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Transparency

Transparent, Translucent
Translucent, Translucent to opaque

Refractive Index

1.758-1.7801.522-1.530
1 3.25
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Optic Character

-
-

Crystal System

-
Triclinic

Birefringence

0.007-0.0100.008-0.010
0 0.296
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Clarity

Transparent
Translucent

Star Sapphire and Amazonite Optic Character

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

Similar to their colors, Star Sapphire and Amazonite 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.