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Prasiolite
Prasiolite

Phlogopite
Phlogopite



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Prasiolite
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Phlogopite

Prasiolite and Phlogopite Optical Properties

Optical Properties

Luster

Vitreous
Pearly

Pleochroism

Very weak: light green pale greenWalter Schumann
-

Dispersion

0.010.04
0.005 1
👆🏻

Transparency

Transparent, Translucent
-

Refractive Index

1.544-1.5531.530-1.573
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Trigonal
monoclinic

Birefringence

0.0090.0280-0.0450
0 0.296
👆🏻

Clarity

Transparent
-

Prasiolite and Phlogopite Optic Character

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

Prasiolite and Phlogopite Transparency

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