×

Feldspar
Feldspar

Antigorite
Antigorite



ADD
Compare
X
Feldspar
X
Antigorite

Feldspar and Antigorite Optical Properties

Optical Properties

Luster

Vitreous
Waxy, Silky, Resinous, Greasy

Pleochroism

None
pale greenish yellow

Dispersion

0.010.02
0.005 1
👆🏻

Transparency

Transparent, Translucent
Translucent

Refractive Index

1.518-1.5701.530-1.575
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Triclinic or monoclinic
Monoclinic Domatic H-M Symbol (m) Space Group: Cm

Birefringence

0.008-0.010-9999
0 0.296
👆🏻

Clarity

Transparent
Translucent

Feldspar and Antigorite Optic Character

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

Similar to their colors, Feldspar and Antigorite 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.