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Obsidian
Obsidian

Phlogopite
Phlogopite



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Obsidian
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Phlogopite

Obsidian and Phlogopite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Pearly
1.2 Pleochroism
AbsentWalter Schumann
Not Available
1.3 Dispersion
0.01NA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Translucent
Not Available
1.5 Refractive Index
1.450-1.5501.530-1.573
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Amorphous
monoclinic
1.8 Birefringence
Not Available0.0280-0.0450
Achroite
0 0.296
1.9 Clarity
Transparent
Not Available

Obsidian and Phlogopite Optic Character

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

Obsidian and Phlogopite Transparency

Similar to their colors, Obsidian and Phlogopite 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, Obsidian is Translucent and Transparent while Obsidian is Translucent and Transparent in appearance.