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Feldspar
Feldspar

Antigorite
Antigorite



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Feldspar
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Antigorite

Feldspar and Antigorite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Waxy, Silky, Resinous, Greasy
1.2 Pleochroism
None
pale greenish yellow.
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Translucent
Translucent
1.5 Refractive Index
1.518-1.5701.530-1.575
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Triclinic or monoclinic
Monoclinic Domatic H-M Symbol (m) Space Group: Cm
1.8 Birefringence
0.008-0.010Not Available
Achroite
0 0.296
1.9 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 Translucent and Transparent while Feldspar is Translucent and Transparent in appearance.