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Meionite
Meionite

Petalite
Petalite



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Meionite
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Petalite

Meionite and Petalite Optical Properties

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1 Optical Properties
1.1 Luster
Vitreous, Resinous
Vitreous, Pearly
1.2 Pleochroism
Not Available
AbsentWalter Schumann
1.3 Dispersion
NA0.01
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Translucent
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.556-1.6001.502-1.523
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
monoclinic
1.8 Birefringence
0.024-0.0370.012-0.016
Achroite
0 0.296
1.9 Clarity
Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Meionite and Petalite Optic Character

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

Meionite and Petalite Transparency

Similar to their colors, Meionite and Petalite 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, Meionite is Translucent and Transparent while Meionite is Translucent and Transparent in appearance.