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Friedelite
Friedelite

Chrysoberyl
Chrysoberyl



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Friedelite
X
Chrysoberyl

Friedelite and Chrysoberyl Optical Properties

1 Optical Properties
1.1 Luster
Not Available
Vitreous
1.2 Pleochroism
NilArthur Thomas
X = red; Y = yellow-orange; Z = emerald-green
1.3 Dispersion
NA0.02
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent
Transparent, Translucent, Transparent to translucent
1.5 Refractive Index
1.627-1.6631.746-1.763
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Biaxial/+
1.7 Crystal System
Monoclinic Prismatic H-M Symbol (2/m) Space Group: C 2/m
Orthorhombic
1.8 Birefringence
0.032-0.0350.007-0.013
Achroite
0 0.296
1.9 Clarity
Translucent
Transparent

Friedelite and Chrysoberyl Optic Character

Friedelite and Chrysoberyl optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Friedelite and Chrysoberyl 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 Chrysoberyl 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. Chrysoberyl has Biaxial/+ character.

Friedelite and Chrysoberyl Transparency

Similar to their colors, Friedelite and Chrysoberyl 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.