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Franklinite
Franklinite

Lepidolite
Lepidolite



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Franklinite
X
Lepidolite

Franklinite and Lepidolite Optical Properties

1 Optical Properties
1.1 Luster
Not Available
Vitreous, Pearly
1.2 Pleochroism
Not Available
X = almost colorless; Y = Z = pink
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent
Transparent
1.5 Refractive Index
Not Available1.525-1.587
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Isometric Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: F d3m
Triclinic
1.8 Birefringence
Not Available0.0290-0.0380
Achroite
0 0.296
1.9 Clarity
Translucent
Transparent

Franklinite and Lepidolite Optic Character

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

Franklinite and Lepidolite Transparency

Similar to their colors, Franklinite and Lepidolite 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, Franklinite is Translucent while Franklinite is Translucent in appearance.