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Pezzottaite
Pezzottaite

Petalite
Petalite



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Pezzottaite
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Petalite

Pezzottaite and Petalite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Vitreous, Pearly
1.2 Pleochroism
Moderate dichroic
AbsentWalter Schumann
1.3 Dispersion
NA0.01
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.598-1.6201.502-1.523
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Hexagonal
monoclinic
1.8 Birefringence
0.008-0.0110.012-0.016
Achroite
0 0.296
1.9 Clarity
Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Pezzottaite and Petalite Optic Character

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

Pezzottaite and Petalite Transparency

Similar to their colors, Pezzottaite 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, Pezzottaite is Transparent while Pezzottaite is Transparent in appearance.