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Austinite
Austinite

Phosgenite
Phosgenite



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Austinite
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Phosgenite

Austinite and Phosgenite Optical Properties

Optical Properties

Luster

Subadamantine, Silky
Adamantine

Pleochroism

-
Weakly pleochroic with O reddish and E greenish in thick sections.

Dispersion

0.030.04
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.7592.117-2.145
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
tetragonal

Birefringence

0.0240.027
0 0.296
👆🏻

Clarity

-
TransparentUlrich Henn and Claudio C. Milisenda

Austinite and Phosgenite Optic Character

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

Austinite and Phosgenite Transparency

Similar to their colors, Austinite and Phosgenite 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, Austinite is while Austinite is in appearance.