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Feldspar
Feldspar

Friedelite
Friedelite



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Friedelite

Feldspar and Friedelite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Not Available
1.2 Pleochroism
None
NilArthur Thomas
1.3 Dispersion
Albite Optical ..
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Fluorite Optical Properties
1.4 Transparency
Transparent, Translucent
Translucent
1.5 Refractive Index
1.518-1.570
1.627-1.663
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Triclinic or monoclinic
Monoclinic Prismatic H-M Symbol (2/m) Space Group: C 2/m
1.8 Birefringence
0.008-0.010
0.032-0.035
1.9 Clarity
Transparent
Translucent

Feldspar and Friedelite Optic Character

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

Similar to their colors, Feldspar and Friedelite 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.