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Spodumene
Spodumene

Phenakite
Phenakite



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Spodumene
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Phenakite

Spodumene and Phenakite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Vitreous
1.2 Pleochroism
Strong in kunzite: α-purple
Distinct: colorless orangy-yellowHerve Nicolas Lazzarelli
1.3 Dispersion
0.020.02
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.657-1.6811.650-1.695
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
monoclinic
Trigonal
1.8 Birefringence
0.014-0.0180.016
Achroite
0 0.296
1.9 Clarity
Gems
TransparentUlrich Henn and Claudio C. Milisenda

Spodumene and Phenakite Optic Character

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

Similar to their colors, Spodumene and Phenakite 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.