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Thomsonite
Thomsonite

Pearl
Pearl



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Thomsonite
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Pearl

Thomsonite and Pearl Optical Properties

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Optical Properties

Luster

Vitreous, Pearly
Pearly

Pleochroism

-
-

Dispersion

0.010.03
0.005 1
👆🏻

Transparency

Translucent
Translucent, Opaque

Refractive Index

1.510-1.5501.52-1.66
1 3.25
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Optic Character

-
-

Crystal System

Orthorhombic
Orthorhombic

Birefringence

0.015-0.0200.156
0 0.296
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Clarity

Translucent
Translucent

Thomsonite and Pearl Optic Character

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

Similar to their colors, Thomsonite and Pearl 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.