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Phlogopite
Phlogopite

Aragonite
Aragonite



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Phlogopite
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Aragonite

Phlogopite and Aragonite Optical Properties

Optical Properties

Luster

Pearly
Vitreous, Resinous

Pleochroism

-
StrongArthur Thomas

Dispersion

0.040.17
0.005 1
👆🏻

Transparency

-
Transparent, Translucent

Refractive Index

1.530-1.5731.525-1.686
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
Orthorhombic

Birefringence

0.0280-0.04500.155
0 0.296
👆🏻

Clarity

-
Transparent

Phlogopite and Aragonite Optic Character

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

Phlogopite and Aragonite Transparency

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