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Precious Opal
Precious Opal

Vesuvianite
Vesuvianite



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Precious Opal
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Vesuvianite

Precious Opal and Vesuvianite Optical Properties

Optical Properties

Luster

-
Vitreous, Resinous

Pleochroism

-
slight in colored varieties

Dispersion

0.010.03
0.005 1
👆🏻

Transparency

Transparent, Translucent
-

Refractive Index

1.370-1.4701.703-1.752
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
tetragonal

Birefringence

-99990.004-0.006
0 0.296
👆🏻

Clarity

Transparent
-

Precious Opal and Vesuvianite Optic Character

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

Precious Opal and Vesuvianite Transparency

Similar to their colors, Precious Opal and Vesuvianite 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, Precious Opal is Transparent and Translucent while Precious Opal is Transparent and Translucent in appearance.