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Manganotantalite
Manganotantalite

Demantoid
Demantoid



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Manganotantalite
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Demantoid

Manganotantalite and Demantoid Optical Properties

1 Optical Properties
1.1 Luster
Not Available
Adamantine
1.2 Pleochroism
Sometimes strongArthur Thomas
None
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
TransparentWalter Schumann, Gemstones of the world (2001) More from other references
Gemmological Tables (2004)
1.5 Refractive Index
2.19-2.341.880-1.890
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
cubic
1.8 Birefringence
0.015Not Available
Achroite
0 0.296
1.9 Clarity
TransparentWalter Schumann
TransparentUlrich Henn and Claudio C. Milisenda

Manganotantalite and Demantoid Optic Character

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

Similar to their colors, Manganotantalite and Demantoid 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 Gemstones of the world (2001) More from other references and TransparentWalter Schumann while Manganotantalite is Gemstones of the world (2001) More from other references and TransparentWalter Schumann in appearance.