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Star Sapphire
Star Sapphire

Aragonite
Aragonite



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Star Sapphire
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Aragonite

Star Sapphire and Aragonite Optical Properties

Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
-
-
0.02
Transparent, Translucent
1.758-1.780
-
-
0.007-0.010
Transparent
 
Vitreous, Resinous
StrongArthur Thomas
0.17
Transparent, Translucent
1.525-1.686
-
Orthorhombic
0.155
Transparent

Star Sapphire and Aragonite Optic Character

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

Similar to their colors, Star Sapphire and Aragonite 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 while Star Sapphire is in appearance.