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Feldspar
Feldspar

Spodumene
Spodumene



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Spodumene

Feldspar and Spodumene Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Vitreous
1.2 Pleochroism
None
Strong in kunzite: α-purple
1.3 Dispersion
Albite Optical ..
Not Available
Rank: N/A (Overall)
0.02
Rank: 22 (Overall)
Fluorite Optical Properties
1.4 Transparency
Transparent, Translucent
Transparent
1.5 Refractive Index
1.518-1.570
1.657-1.681
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Triclinic or monoclinic
monoclinic
1.8 Birefringence
0.008-0.010
0.014-0.018
1.9 Clarity
Transparent
Gems

Feldspar and Spodumene Optic Character

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

Feldspar and Spodumene Transparency

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