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Chrysocolla
Chrysocolla

Opal
Opal



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Chrysocolla
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Opal

Chrysocolla and Opal Optical Properties

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Optical Properties

Luster

Vitreous, Greasy
Vitreous, Pearly

Pleochroism

-
None

Dispersion

0.020.01
0.005 1
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Transparency

Opaque
Transparent, Translucent, Transparent to translucent

Refractive Index

1.460-1.5701.37-1.52
1 3.25
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Optic Character

-
-

Crystal System

monoclinic
Trigonal

Birefringence

0.023-0.050-9999
0 0.296
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Clarity

-
Transparent

Chrysocolla and Opal Optic Character

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

Chrysocolla and Opal Transparency

Similar to their colors, Chrysocolla 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, Chrysocolla is Opaque while Chrysocolla is Opaque in appearance.