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Obsidian
Obsidian

White Opal
White Opal



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Obsidian
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White Opal

Obsidian and White Opal Optical Properties

Optical Properties

Luster

Vitreous
-

Pleochroism

-
-

Dispersion

0.010.01
0.005 1
👆🏻

Transparency

Transparent, Translucent
Translucent

Refractive Index

1.450-1.5501.37-1.52
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
-

Birefringence

-9999-9999
0 0.296
👆🏻

Clarity

Transparent
Translucent

Obsidian and White Opal Optic Character

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

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