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Obsidian
Obsidian

Herderite
Herderite



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Obsidian
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Herderite

Obsidian and Herderite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Vitreous
1.2 Pleochroism
AbsentWalter Schumann
Not Available
1.3 Dispersion
0.01NA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Translucent
Transparent
1.5 Refractive Index
1.450-1.5501.587-1.642
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Biaxial/+
1.7 Crystal System
Amorphous
monoclinic
1.8 Birefringence
Not Available0.028-0.032
Achroite
0 0.296
1.9 Clarity
Transparent
Transparent

Obsidian and Herderite Optic Character

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

Obsidian and Herderite Transparency

Similar to their colors, Obsidian and Herderite 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.