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Spodumene
Spodumene

Prehnite
Prehnite



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Spodumene
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Prehnite

Spodumene and Prehnite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Vitreous
1.2 Pleochroism
Strong in kunzite: α-purple
AbsentWalter Schumann
1.3 Dispersion
0.02None
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent
Translucent
1.5 Refractive Index
1.657-1.6811.611-1.673
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
monoclinic
Orthorhombic
1.8 Birefringence
0.014-0.0180.021-0.033
Achroite
0 0.296
1.9 Clarity
Gems
TranslucentHerve Nicolas Lazzarelli

Spodumene and Prehnite Optic Character

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

Similar to their colors, Spodumene and Prehnite 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.