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Petalite
Petalite

Charoite
Charoite



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Petalite
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Charoite

Petalite and Charoite Optical Properties

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1 Optical Properties
1.1 Luster
Vitreous, Pearly
Pearly, Fibrous, Chatoyant
1.2 Pleochroism
AbsentWalter Schumann
NilArthur Thomas
1.3 Dispersion
0.01NA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Gemmological Tables (2004) More from other references
Translucent
1.5 Refractive Index
1.502-1.5231.545-1.560
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
monoclinic
Triclinic
1.8 Birefringence
0.012-0.0160.009
Achroite
0 0.296
1.9 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Translucent

Petalite and Charoite Optic Character

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

Petalite and Charoite Transparency

Similar to their colors, Petalite and Charoite 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, Petalite is Gemmological Tables (2004) More from other references while Petalite is Gemmological Tables (2004) More from other references in appearance.