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Thomsonite
Thomsonite

Pleonaste
Pleonaste



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Thomsonite
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Pleonaste

Thomsonite and Pleonaste Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Pearly
Not Available
1.2 Pleochroism
NilArthur Thomas
Not Available
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent
Gemmological Tables (2004)
1.5 Refractive Index
1.510-1.5501.780
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic
Not Available
1.8 Birefringence
0.015-0.020Not Available
Achroite
0 0.296
1.9 Clarity
Translucent
Gemmological Tables (2004)

Thomsonite and Pleonaste Optic Character

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

Similar to their colors, Thomsonite and Pleonaste 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.