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Manganotantalite
Manganotantalite

Variscite
Variscite



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Manganotantalite
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Variscite

Manganotantalite and Variscite Optical Properties

Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
-
Sometimes strongArthur Thomas
-
TransparentWalter Schumann
2.19-2.34
-
-
0.015
TransparentWalter Schumann
 
Vitreous, Waxy
-
0.01
Translucent, Opaque . May be translucent when backlit on the edges.
1.560-1.594
-
Orthorhombic
0.031
Translucent

Manganotantalite and Variscite Optic Character

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

Manganotantalite and Variscite Transparency

Similar to their colors, Manganotantalite and Variscite 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, Manganotantalite is while Manganotantalite is in appearance.