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Cavansite
Cavansite

Phosgenite
Phosgenite



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Cavansite
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Phosgenite

Cavansite and Phosgenite Optical Properties

Optical Properties

Luster

Vitreous, Pearly
Adamantine

Pleochroism

Visible: X=Z= colorless Y= blue
Weakly pleochroic with O reddish and E greenish in thick sections.

Dispersion

0.040.04
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.5422.117-2.145
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
tetragonal

Birefringence

0.0090.027
0 0.296
👆🏻

Clarity

-
TransparentUlrich Henn and Claudio C. Milisenda

Cavansite and Phosgenite Optic Character

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

Cavansite and Phosgenite Transparency

Similar to their colors, Cavansite 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, Cavansite is while Cavansite is in appearance.