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Jadeite
Jadeite

Spinel
Spinel



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Jadeite
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Spinel

Jadeite and Spinel Optical Properties

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Optical Properties

Luster

Pearly
Vitreous

Pleochroism

-
Absent

Dispersion

0.010.02
0.005 1
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Transparency

Translucent
Transparent, Translucent, Transparent to translucent

Refractive Index

1.652-1.6881.73
1 3.25
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Optic Character

-
-

Crystal System

monoclinic
Isometric

Birefringence

0.013-0.020-9999
0 0.296
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Clarity

Translucent
TransparentUlrich Henn and Claudio C. Milisenda

Jadeite and Spinel Optic Character

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

Jadeite and Spinel Transparency

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