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Omphacite
Omphacite

Phosphophyllite
Phosphophyllite



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Omphacite
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Phosphophyllite

Omphacite and Phosphophyllite Optical Properties

Optical Properties

Luster

Vitreous
-

Pleochroism

Weak: colorless -- very pale green -- very pale green
-

Dispersion

0.020.03
0.005 1
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Transparency

TranslucentAnthony et al
-

Refractive Index

1.662-1.7231.595-1.621
1 3.25
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Optic Character

-
-

Crystal System

-
-

Birefringence

-99990.021
0 0.296
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Clarity

TranslucentAnthony et al
TransparentUlrich Henn and Claudio C. Milisenda

Omphacite and Phosphophyllite Optic Character

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

Omphacite and Phosphophyllite Transparency

Similar to their colors, Omphacite and Phosphophyllite 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, Omphacite is TranslucentAnthony et al while Omphacite is TranslucentAnthony et al in appearance.