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Milk Opal
Milk Opal

Phosgenite
Phosgenite



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Milk Opal
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Phosgenite

Milk Opal and Phosgenite Optical Properties

Optical Properties

Luster

-
Adamantine

Pleochroism

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

Dispersion

0.010.04
0.005 1
👆🏻

Transparency

Translucent
-

Refractive Index

1.37-1.522.117-2.145
1 3.25
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Optic Character

-
-

Crystal System

-
tetragonal

Birefringence

-99990.027
0 0.296
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Clarity

-
TransparentUlrich Henn and Claudio C. Milisenda

Milk Opal and Phosgenite Optic Character

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

Milk Opal and Phosgenite Transparency

Similar to their colors, Milk Opal 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, Milk Opal is Translucent while Milk Opal is Translucent in appearance.