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Friedelite
Friedelite

Poudretteite
Poudretteite



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Friedelite
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Poudretteite

Friedelite and Poudretteite Optical Properties

1 Optical Properties
1.1 Luster
Not Available
Vitreous
1.2 Pleochroism
NilArthur Thomas
Colorless
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.627-1.6631.511-1.532
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
Hexagonal
1.8 Birefringence
0.032-0.0350.021
Achroite
0 0.296
1.9 Clarity
Translucent
TransparentUlrich Henn and Claudio C. Milisenda

Friedelite and Poudretteite Optic Character

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

Similar to their colors, Friedelite and Poudretteite 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.