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Aragonite
Aragonite

Apophyllite
Apophyllite



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Aragonite
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Apophyllite

Aragonite and Apophyllite Optical Properties

Optical Properties

Luster

Vitreous, Resinous
Vitreous, Pearly

Pleochroism

StrongArthur Thomas
Dichroic (colorless)

Dispersion

0.170.01
0.005 1
👆🏻

Transparency

Transparent, Translucent
Transparent, Translucent

Refractive Index

1.525-1.6861.530-1.543
1 3.25
👆🏻

Optic Character

-
Uniaxial/-

Crystal System

Orthorhombic
tetragonal

Birefringence

0.1550.000-0.003
0 0.296
👆🏻

Clarity

Transparent
Transparent

Aragonite and Apophyllite Optic Character

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

Aragonite and Apophyllite Transparency

Similar to their colors, Aragonite 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, Aragonite is Transparent and Translucent while Aragonite is Transparent and Translucent in appearance.