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Gedrite
Gedrite

Apophyllite
Apophyllite



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Gedrite
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Apophyllite

Gedrite and Apophyllite Optical Properties

Optical Properties

Luster

Vitreous
Vitreous, Pearly

Pleochroism

Weak to moderate
Dichroic (colorless)

Dispersion

0.020.01
0.005 1
👆🏻

Transparency

Transparent
Transparent, Translucent

Refractive Index

1.625-1.7181.530-1.543
1 3.25
👆🏻

Optic Character

-
Uniaxial/-

Crystal System

Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
tetragonal

Birefringence

-99990.000-0.003
0 0.296
👆🏻

Clarity

Transparent
Transparent

Gedrite and Apophyllite Optic Character

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

Gedrite and Apophyllite Transparency

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