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Agrellite
Agrellite

Sapphire
Sapphire



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Agrellite
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Sapphire

Agrellite and Sapphire Optical Properties

Optical Properties

Luster

Pearly
Vitreous, Adamantine

Pleochroism

colorless.
Strong

Dispersion

0.010.02
0.005 1
👆🏻

Transparency

-
Transparent, Translucent, Transparent to opaque

Refractive Index

1.5671.762-1.788
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Triclinic
Trigonal

Birefringence

0.0140.008-0.009
0 0.296
👆🏻

Clarity

-
Transparent

Agrellite and Sapphire Optic Character

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

Agrellite and Sapphire Transparency

Similar to their colors, Agrellite and 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, Agrellite is while Agrellite is in appearance.