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Star Sapphire
Star Sapphire

Anhydrite
Anhydrite



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Star Sapphire
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Anhydrite

Star Sapphire and Anhydrite 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
 
Pearly, Greasy
For violet varieties
0.01
Transparent
1.570-1.614
-
Orthorhombic
0.042-0.044
Transparent

Star Sapphire and Anhydrite Optic Character

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

Similar to their colors, Star Sapphire and Anhydrite 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.