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Corundum
Corundum

Manganotantalite
Manganotantalite



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Corundum
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Manganotantalite

Corundum and Manganotantalite Optical Properties

1 Optical Properties
1.1 Luster
Adamantine, Vitreous
Not Available
1.2 Pleochroism
None
Sometimes strongArthur Thomas
1.3 Dispersion
0.02NA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Translucent
TransparentWalter Schumann, Gemstones of the world (2001) More from other references
1.5 Refractive Index
1.758-1.7802.19-2.34
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Trigonal
Not Available
1.8 Birefringence
0.007-0.0100.015
Achroite
0 0.296
1.9 Clarity
Gemmological Tables (2004) More from other references
TransparentWalter Schumann

Corundum and Manganotantalite Optic Character

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

Corundum and Manganotantalite Transparency

Similar to their colors, Corundum and Manganotantalite 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, Corundum is Translucent and Transparent while Corundum is Translucent and Transparent in appearance.