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Friedelite
Friedelite

Antigorite
Antigorite



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Friedelite
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Antigorite

Friedelite and Antigorite Optical Properties

1 Optical Properties
1.1 Luster
Not Available
Waxy, Silky, Resinous, Greasy
1.2 Pleochroism
NilArthur Thomas
pale greenish yellow.
1.3 Dispersion
Albite Optical ..
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Fluorite Optical Properties
1.4 Transparency
Translucent
Translucent
1.5 Refractive Index
1.627-1.663
1.530-1.575
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Monoclinic Prismatic H-M Symbol (2/m) Space Group: C 2/m
Monoclinic Domatic H-M Symbol (m) Space Group: Cm
1.8 Birefringence
0.032-0.035
Not Available
1.9 Clarity
Translucent
Translucent

Friedelite and Antigorite Optic Character

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

Friedelite and Antigorite Transparency

Similar to their colors, Friedelite 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, Friedelite is Translucent while Friedelite is Translucent in appearance.