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Hiddenite
Hiddenite

Precious Opal
Precious Opal



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Hiddenite
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Precious Opal

Hiddenite and Precious Opal Optical Properties

Optical Properties

Luster

Vitreous
-

Pleochroism

Distinct trichroism: yellow green green blue greenHerve Nicolas Lazzarelli
-

Dispersion

0.020.01
0.005 1
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Transparency

Transparent
Transparent, Translucent

Refractive Index

1.657-1.6811.370-1.470
1 3.25
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Optic Character

-
-

Crystal System

monoclinic
-

Birefringence

0.014-0.016-9999
0 0.296
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Clarity

TransparentUlrich Henn and Claudio C. Milisenda
Transparent

Hiddenite and Precious Opal Optic Character

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

Hiddenite and Precious Opal Transparency

Similar to their colors, Hiddenite and Precious 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, Hiddenite is Transparent while Hiddenite is Transparent in appearance.