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Crocoite
Crocoite

Phlogopite
Phlogopite



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Crocoite
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Phlogopite

Crocoite and Phlogopite Optical Properties

Optical Properties

Luster

Adamantine
Pearly

Pleochroism

Distinctly trichroic
-

Dispersion

0.020.04
0.005 1
👆🏻

Transparency

Transparent
-

Refractive Index

2.31-2.661.530-1.573
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/n
monoclinic

Birefringence

-99990.0280-0.0450
0 0.296
👆🏻

Clarity

Transparent
-

Crocoite and Phlogopite Optic Character

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

Crocoite and Phlogopite Transparency

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