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Pyrope
Pyrope

Star Sapphire
Star Sapphire



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Pyrope
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Star Sapphire

Pyrope and Star Sapphire Optical Properties

Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Greasy, Vitreous
None
0.02
-
1.720-1.756
-
cubic
-9999
TransparentUlrich Henn and Claudio C. Milisenda
 
-
-
0.02
Transparent, Translucent
1.758-1.780
-
-
0.007-0.010
Transparent

Pyrope and Star Sapphire Optic Character

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

Pyrope and Star Sapphire Transparency

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