×

Feldspar
Feldspar

Aragonite
Aragonite



ADD
Compare
X
Feldspar
X
Aragonite

Feldspar and Aragonite Optical Properties

Optical Properties

Luster

Vitreous
Vitreous, Resinous

Pleochroism

None
StrongArthur Thomas

Dispersion

0.010.17
0.005 1
👆🏻

Transparency

Transparent, Translucent
Transparent, Translucent

Refractive Index

1.518-1.5701.525-1.686
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Triclinic or monoclinic
Orthorhombic

Birefringence

0.008-0.0100.155
0 0.296
👆🏻

Clarity

Transparent
Transparent

Feldspar and Aragonite Optic Character

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

Similar to their colors, Feldspar and Aragonite 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.