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Agate
Agate

Spodumene
Spodumene



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Agate
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Spodumene

Agate and Spodumene Optical Properties

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Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

Absent
Strong in kunzite: α-purple

Dispersion

0.010.02
0.005 1
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Transparency

Translucent
Transparent

Refractive Index

1.530-1.5431.657-1.681
1 3.25
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Optic Character

-
-

Crystal System

Trigonal
monoclinic

Birefringence

0.0040.014-0.018
0 0.296
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Clarity

Translucent
-

Agate and Spodumene Optic Character

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

Agate and Spodumene Transparency

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