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Brookite
Brookite

Spodumene
Spodumene



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Brookite
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Spodumene

Brookite and Spodumene Optical Properties

Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Adamantine
Very weak
0.20
-
2.583-2.741
-
Orthorhombic
0.117
-
 
Vitreous
Strong in kunzite: α-purple
0.02
Transparent
1.657-1.681
-
monoclinic
0.014-0.018
-

Brookite and Spodumene Optic Character

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

Brookite and Spodumene Transparency

Similar to their colors, Brookite 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, Brookite is while Brookite is in appearance.