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Padparadscha
Padparadscha

Opal
Opal



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Padparadscha
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Opal

Padparadscha and Opal Optical Properties

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Optical Properties

Luster

-
Vitreous, Pearly

Pleochroism

-
None

Dispersion

0.020.01
0.005 1
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Transparency

Transparent, Translucent
Transparent, Translucent, Transparent to translucent

Refractive Index

1.757-1.7801.37-1.52
1 3.25
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Optic Character

-
-

Crystal System

-
Trigonal

Birefringence

0.007-0.010-9999
0 0.296
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Clarity

Transparent
Transparent

Padparadscha and Opal Optic Character

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

Padparadscha and Opal Transparency

Similar to their colors, Padparadscha and 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, Padparadscha is Transparent and Translucent while Padparadscha is Transparent and Translucent in appearance.