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Tantalite
Tantalite

Sunstone
Sunstone



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Tantalite
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Tantalite and Sunstone Optical Properties

1 Optical Properties
1.1 Luster
Resinous
Vitreous
1.2 Pleochroism
Not Available
Weak or absentWalter Schumann
1.3 Dispersion
NANone
Fluorite Optical Properties
0.007 1
1.4 Transparency
TransparentWalter Schumann, Gemstones of the world (2001) More from other references
Transparent, Translucent, Transparent to translucent
1.5 Refractive Index
2.190-2.4571.53-1.55
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic
Triclinic
1.8 Birefringence
0.0830.007-0.010
Achroite
0 0.296
1.9 Clarity
TransparentWalter Schumann
Transparent to translucent

Tantalite and Sunstone Optic Character

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

Similar to their colors, Tantalite and Sunstone 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.