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Omphacite
Omphacite

Apophyllite
Apophyllite



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Omphacite
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Apophyllite

Omphacite and Apophyllite Optical Properties

Optical Properties

Luster

Vitreous
Vitreous, Pearly

Pleochroism

Weak: colorless -- very pale green -- very pale green
Dichroic (colorless)

Dispersion

0.020.01
0.005 1
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Transparency

TranslucentAnthony et al
Transparent, Translucent

Refractive Index

1.662-1.7231.530-1.543
1 3.25
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Optic Character

-
Uniaxial/-

Crystal System

-
tetragonal

Birefringence

-99990.000-0.003
0 0.296
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Clarity

TranslucentAnthony et al
Transparent

Omphacite and Apophyllite Optic Character

Omphacite and Apophyllite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Omphacite and Apophyllite 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 Apophyllite 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. Apophyllite has Uniaxial/- character.

Omphacite and Apophyllite Transparency

Similar to their colors, Omphacite and Apophyllite 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.