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Tantalite
Tantalite

Cinnabar
Cinnabar



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Tantalite
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Cinnabar

Tantalite and Cinnabar Optical Properties

1 Optical Properties
1.1 Luster
Resinous
Adamantine
1.2 Pleochroism
Not Available
NilArthur Thomas
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
TransparentWalter Schumann, Gemstones of the world (2001) More from other references
Translucent
1.5 Refractive Index
2.190-2.4572.905-3.25
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic
Trigonal
1.8 Birefringence
0.083Not Available
Achroite
0 0.296
1.9 Clarity
TransparentWalter Schumann
Translucent

Tantalite and Cinnabar Optic Character

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

Tantalite and Cinnabar Transparency

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