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Liddicoatite
Liddicoatite

Phosgenite
Phosgenite



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Liddicoatite
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Phosgenite

Liddicoatite and Phosgenite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Adamantine
1.2 Pleochroism
Strong: dark brown light brownAnthony et al
Weakly pleochroic with O reddish and E greenish in thick sections.
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent
Gemmological Tables (2004) More from other references
1.5 Refractive Index
Not Available2.117-2.145
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
tetragonal
1.8 Birefringence
Not Available0.027
Achroite
0 0.296
1.9 Clarity
Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Liddicoatite and Phosgenite Optic Character

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

Liddicoatite and Phosgenite Transparency

Similar to their colors, Liddicoatite 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, Liddicoatite is Transparent while Liddicoatite is Transparent in appearance.