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Spodumene
Spodumene

Pumpellyite
Pumpellyite



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Spodumene
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Pumpellyite

Spodumene and Pumpellyite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Fibrous
1.2 Pleochroism
Strong in kunzite: α-purple
Not Available
1.3 Dispersion
0.02NA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent
Gemmological Tables (2004)
1.5 Refractive Index
1.657-1.6811.674-1.764
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
monoclinic
monoclinic
1.8 Birefringence
0.014-0.0180.014-0.016
Achroite
0 0.296
1.9 Clarity
Gems
OpaqueUlrich Henn and Claudio C. Milisenda

Spodumene and Pumpellyite Optic Character

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

Similar to their colors, Spodumene and Pumpellyite 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.