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Feldspar
Feldspar

Omphacite
Omphacite



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Feldspar
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Omphacite

Feldspar and Omphacite Optical Properties

Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

None
Weak: colorless -- very pale green -- very pale green

Dispersion

0.010.02
0.005 1
👆🏻

Transparency

Transparent, Translucent
TranslucentAnthony et al

Refractive Index

1.518-1.5701.662-1.723
1 3.25
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Optic Character

-
-

Crystal System

Triclinic or monoclinic
-

Birefringence

0.008-0.010-9999
0 0.296
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Clarity

Transparent
TranslucentAnthony et al

Feldspar and Omphacite Optic Character

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

Feldspar and Omphacite Transparency

Similar to their colors, Feldspar and Omphacite 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, Feldspar is Transparent and Translucent while Feldspar is Transparent and Translucent in appearance.