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Legrandite
Legrandite

Spinel
Spinel



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Legrandite
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Spinel

Legrandite and Spinel Optical Properties

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Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

Colorless
Absent

Dispersion

0.030.02
0.005 1
👆🏻

Transparency

-
Transparent, Translucent, Transparent to translucent

Refractive Index

1.702-1.7401.73
1 3.25
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Optic Character

-
-

Crystal System

monoclinic
Isometric

Birefringence

0.060-9999
0 0.296
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Clarity

-
TransparentUlrich Henn and Claudio C. Milisenda

Legrandite and Spinel Optic Character

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

Legrandite and Spinel Transparency

Similar to their colors, Legrandite and Spinel 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, Legrandite is while Legrandite is in appearance.