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White Opal
White Opal

Anhydrite
Anhydrite



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White Opal
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Anhydrite

White Opal and Anhydrite Optical Properties

Optical Properties

Luster

-
Pearly, Greasy

Pleochroism

-
For violet varieties

Dispersion

0.010.01
0.005 1
👆🏻

Transparency

Translucent
Transparent

Refractive Index

1.37-1.521.570-1.614
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
Orthorhombic

Birefringence

-99990.042-0.044
0 0.296
👆🏻

Clarity

Translucent
Transparent

White Opal and Anhydrite Optic Character

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

White Opal and Anhydrite Transparency

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