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Augelite
Augelite

Thomsonite
Thomsonite



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Augelite
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Thomsonite

Augelite and Thomsonite Optical Properties

Optical Properties

Luster

Pearly
Vitreous, Pearly

Pleochroism

-
-

Dispersion

0.020.01
0.005 1
👆🏻

Transparency

-
Translucent

Refractive Index

1.570-1.5911.510-1.550
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
Orthorhombic

Birefringence

0.020-0.0210.015-0.020
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
Translucent

Augelite and Thomsonite Optic Character

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

Augelite and Thomsonite Transparency

Similar to their colors, Augelite and Thomsonite 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, Augelite is while Augelite is in appearance.