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Thomsonite
Thomsonite

Ammolite
Ammolite



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Thomsonite
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Ammolite

Thomsonite and Ammolite Optical Properties

Optical Properties

Luster

Vitreous, Pearly
Silky, Vitreous

Pleochroism

-
None

Dispersion

0.010.01
0.005 1
👆🏻

Transparency

Translucent
-

Refractive Index

1.510-1.5501.520-1.670
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
Trigonal

Birefringence

0.015-0.0200.135-0.145
0 0.296
👆🏻

Clarity

Translucent
-

Thomsonite and Ammolite Optic Character

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

Thomsonite and Ammolite Transparency

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