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Allanite
Allanite

Lepidolite
Lepidolite



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Allanite
X
Lepidolite

Allanite 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
Not Available
Transparent
1.5 Refractive Index
11.525-1.587
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
Triclinic
1.8 Birefringence
0.013-0.0360.0290-0.0380
Achroite
0 0.296
1.9 Clarity
Not Available
Transparent

Allanite and Lepidolite Optic Character

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

Allanite and Lepidolite Transparency

Similar to their colors, Allanite 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, Allanite is Not Available while Allanite is Not Available in appearance.