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Precious Opal
Precious Opal

Verdite
Verdite



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Precious Opal
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Verdite

Precious Opal and Verdite Optical Properties

Optical Properties

Luster

-
Vitreous, Silky

Pleochroism

-
Extreme

Dispersion

0.010.03
0.005 1
👆🏻

Transparency

Transparent, Translucent
Translucent

Refractive Index

1.370-1.4701.580
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
Monoclinic Prismatic H-M Symbol (2/m) Space Group: C 2/c

Birefringence

-9999-9999
0 0.296
👆🏻

Clarity

Transparent
Translucent

Precious Opal and Verdite Optic Character

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

Similar to their colors, Precious Opal and Verdite 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.