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Friedelite
Friedelite

Omphacite
Omphacite



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Friedelite and Omphacite Optical Properties

1 Optical Properties
1.1 Luster
Not Available
Vitreous
1.2 Pleochroism
NilArthur Thomas
Weak: colorless -- very pale green -- very pale green
1.3 Dispersion
Albite Optical ..
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Fluorite Optical Properties
1.4 Transparency
Translucent
TranslucentAnthony et al, Handbook of mineralogy (2001)
1.5 Refractive Index
1.627-1.663
1.662-1.723
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Monoclinic Prismatic H-M Symbol (2/m) Space Group: C 2/m
Not Available
1.8 Birefringence
0.032-0.035
Not Available
1.9 Clarity
Translucent
TranslucentAnthony et al

Friedelite and Omphacite Optic Character

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

Similar to their colors, Friedelite and Omphacite 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.