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Eosphorite
Eosphorite

Petalite
Petalite



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Eosphorite
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Petalite

Eosphorite and Petalite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Resinous
Vitreous, Pearly
1.2 Pleochroism
Visible: X = yellow; Y = pink; Z = pale pink to colorless
AbsentWalter Schumann
1.3 Dispersion
Albite Optical ..
Not Available
Rank: N/A (Overall)
0.01
Rank: 25 (Overall)
Fluorite Optical Properties
1.4 Transparency
Transparent
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.639-1.672
1.502-1.523
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic
monoclinic
1.8 Birefringence
0.029-0.032
0.012-0.016
1.9 Clarity
Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Eosphorite and Petalite Optic Character

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

Eosphorite and Petalite Transparency

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