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Spodumene
Spodumene

Stibiotantalite
Stibiotantalite



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Stibiotantalite

Spodumene and Stibiotantalite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Adamantine
1.2 Pleochroism
Strong in kunzite: α-purple
Not Available
1.3 Dispersion
Albite Optical ..
0.02
Rank: 22 (Overall)
Not Available
Rank: N/A (Overall)
Fluorite Optical Properties
1.4 Transparency
Transparent
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.657-1.681
2.37-2.45
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
monoclinic
Not Available
1.8 Birefringence
0.014-0.018
0.08
1.9 Clarity
Gems
TransparentUlrich Henn and Claudio C. Milisenda

Spodumene and Stibiotantalite Optic Character

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

Spodumene and Stibiotantalite Transparency

Similar to their colors, Spodumene and Stibiotantalite 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, Spodumene is Transparent while Spodumene is Transparent in appearance.