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Ivory
Ivory

Phosgenite
Phosgenite



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Ivory
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Phosgenite

Ivory and Phosgenite Optical Properties

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Optical Properties

Luster

-
Adamantine

Pleochroism

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

Dispersion

-0.04
0.005 1
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Transparency

Translucent
-

Refractive Index

1.535-1.5702.117-2.145
1 3.25
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Optic Character

-
-

Crystal System

-
tetragonal

Birefringence

-99990.027
0 0.296
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Clarity

Translucent
TransparentUlrich Henn and Claudio C. Milisenda

Ivory and Phosgenite Optic Character

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

Ivory and Phosgenite Transparency

Similar to their colors, Ivory 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, Ivory is Translucent while Ivory is Translucent in appearance.