Andesine and Phosgenite Optical Properties

Andesine

Phosgenite

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Optical Properties

Luster

Vitreous

Adamantine

Pleochroism

colorless.

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

Dispersion

0.700.04

0.005 1

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Transparency

Transparent, Translucent, Transparent to translucent

Refractive Index

1.543-1.5642.117-2.145

1 3.25

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Optic Character

Biaxial/+

Crystal System

Triclinic

tetragonal

Birefringence

0.007-0.0110.027

0 0.296

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Clarity

Transparent

TransparentUlrich Henn and Claudio C. Milisenda

Andesine and Phosgenite Optic Character

Andesine and Phosgenite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Andesine 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 Andesine 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. Andesine has Biaxial/+ character.

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Andesine and Phosgenite Transparency

Similar to their colors, Andesine 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, Andesine is Transparent, Translucent and Transparent to translucent while Andesine is Transparent, Translucent and Transparent to translucent in appearance.