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Arfvedsonite
Arfvedsonite

Thomsonite
Thomsonite



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Arfvedsonite
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Thomsonite

Arfvedsonite and Thomsonite Optical Properties

Optical Properties

Luster

Vitreous
Vitreous, Pearly

Pleochroism

Strong: Blue-greens
-

Dispersion

0.020.01
0.005 1
👆🏻

Transparency

-
Translucent

Refractive Index

1.652-1.6991.510-1.550
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
Orthorhombic

Birefringence

-99990.015-0.020
0 0.296
👆🏻

Clarity

-
Translucent

Arfvedsonite and Thomsonite Optic Character

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

Arfvedsonite and Thomsonite Transparency

Similar to their colors, Arfvedsonite 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, Arfvedsonite is while Arfvedsonite is in appearance.