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Prehnite
Prehnite

Spodumene
Spodumene



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Prehnite
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Spodumene

Prehnite and Spodumene Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Vitreous
1.2 Pleochroism
AbsentWalter Schumann
Strong in kunzite: α-purple
1.3 Dispersion
None0.02
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent
Transparent
1.5 Refractive Index
1.611-1.6731.657-1.681
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic
monoclinic
1.8 Birefringence
0.021-0.0330.014-0.018
Achroite
0 0.296
1.9 Clarity
TranslucentHerve Nicolas Lazzarelli
Gems

Prehnite and Spodumene Optic Character

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

Prehnite and Spodumene Transparency

Similar to their colors, Prehnite 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, Prehnite is Translucent while Prehnite is Translucent in appearance.