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Musgravite
Musgravite

Petalite
Petalite



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Musgravite
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Petalite

Musgravite and Petalite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Vitreous, Pearly
1.2 Pleochroism
Not Available
AbsentWalter Schumann
1.3 Dispersion
NA0.01
Fluorite Optical Properties
0.007 1
2.5 Transparency
Gemmological Tables (2004)
Gemmological Tables (2004) More from other references
2.6 Refractive Index
1.719-1.7391.502-1.523
Agate Opal
1 3.25
2.10 Optic Character
Not Available
Not Available
2.11 Crystal System
Trigonal
monoclinic
2.12 Birefringence
0.014-0.0160.012-0.016
Achroite
0 0.296
3.4 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
TransparentUlrich Henn and Claudio C. Milisenda

Musgravite and Petalite Optic Character

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

Musgravite and Petalite Transparency

Similar to their colors, Musgravite 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, Musgravite is Gemmological Tables (2004) while Musgravite is Gemmological Tables (2004) in appearance.