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Charoite
Charoite

Allanite
Allanite



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Charoite
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Allanite

Charoite and Allanite Optical Properties

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1 Optical Properties
1.1 Luster
Pearly, Fibrous, Chatoyant
Not Available
1.2 Pleochroism
NilArthur Thomas
Not Available
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent
Not Available
1.5 Refractive Index
1.545-1.5601
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Triclinic
Not Available
1.8 Birefringence
0.0090.013-0.036
Achroite
0 0.296
1.9 Clarity
Translucent
Not Available

Charoite and Allanite Optic Character

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

Charoite and Allanite Transparency

Similar to their colors, Charoite and Allanite 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, Charoite is Translucent while Charoite is Translucent in appearance.