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Pleonaste
Pleonaste

Tantalite
Tantalite



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Tantalite

Pleonaste and Tantalite Optical Properties

1 Optical Properties
1.1 Luster
Not Available
Resinous
1.2 Pleochroism
Not Available
Not Available
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Gemmological Tables (2004)
TransparentWalter Schumann, Gemstones of the world (2001) More from other references
1.5 Refractive Index
1.7802.190-2.457
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
Orthorhombic
1.8 Birefringence
Not Available0.083
Achroite
0 0.296
1.9 Clarity
Gemmological Tables (2004)
TransparentWalter Schumann

Pleonaste and Tantalite Optic Character

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

Pleonaste and Tantalite Transparency

Similar to their colors, Pleonaste and Tantalite 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, Pleonaste is Gemmological Tables (2004) while Pleonaste is Gemmological Tables (2004) in appearance.