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Feldspar
Feldspar

Hiddenite
Hiddenite



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Feldspar
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Hiddenite

Feldspar and Hiddenite Optical Properties

Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

None
Distinct trichroism: yellow green green blue greenHerve Nicolas Lazzarelli

Dispersion

0.010.02
0.005 1
👆🏻

Transparency

Transparent, Translucent
Transparent

Refractive Index

1.518-1.5701.657-1.681
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Triclinic or monoclinic
monoclinic

Birefringence

0.008-0.0100.014-0.016
0 0.296
👆🏻

Clarity

Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Feldspar and Hiddenite Optic Character

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

Similar to their colors, Feldspar and Hiddenite 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.