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Apophyllite
Apophyllite

Brookite
Brookite



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Apophyllite
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Brookite

Apophyllite and Brookite Optical Properties

Optical Properties

Luster

Vitreous, Pearly
Adamantine

Pleochroism

Dichroic (colorless)
Very weak

Dispersion

0.010.20
0.005 1
👆🏻

Transparency

Transparent, Translucent
-

Refractive Index

1.530-1.5432.583-2.741
1 3.25
👆🏻

Optic Character

Uniaxial/-
-

Crystal System

tetragonal
Orthorhombic

Birefringence

0.000-0.0030.117
0 0.296
👆🏻

Clarity

Transparent
-

Apophyllite and Brookite Optic Character

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

Apophyllite and Brookite Transparency

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