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Phlogopite
Phlogopite

Stolzite
Stolzite



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Phlogopite
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Stolzite

Phlogopite and Stolzite Optical Properties

Optical Properties

Luster

Pearly
Resinous, Subadamantine

Pleochroism

-
-

Dispersion

0.040.03
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.530-1.5732.180-2.190
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
tetragonal

Birefringence

0.0280-0.04500.090
0 0.296
👆🏻

Clarity

-
-

Phlogopite and Stolzite Optic Character

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

Similar to their colors, Phlogopite and Stolzite 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.