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Friedelite
Friedelite

Pumpellyite
Pumpellyite



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Friedelite
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Pumpellyite

Friedelite and Pumpellyite Optical Properties

1 Optical Properties
1.1 Luster
Not Available
Fibrous
1.2 Pleochroism
NilArthur Thomas
Not Available
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent
Gemmological Tables (2004)
1.5 Refractive Index
1.627-1.6631.674-1.764
Agate Opal
1 3.25
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
1.8 Birefringence
0.032-0.0350.014-0.016
Achroite
0 0.296
1.9 Clarity
Translucent
OpaqueUlrich Henn and Claudio C. Milisenda

Friedelite and Pumpellyite Optic Character

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

Similar to their colors, Friedelite and Pumpellyite 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.