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Astrophyllite
Astrophyllite

Hiddenite
Hiddenite



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Astrophyllite
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Hiddenite

Astrophyllite and Hiddenite Optical Properties

Optical Properties

Luster

Greasy, Pearly
Vitreous

Pleochroism

Strong: X= deep red-orange Y= orange-yellow Z= lemon-yellow
Distinct trichroism: yellow green green blue greenHerve Nicolas Lazzarelli

Dispersion

0.120.02
0.005 1
👆🏻

Transparency

Translucent
Transparent

Refractive Index

1.678-1.7581.657-1.681
1 3.25
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Optic Character

-
-

Crystal System

Triclinic
monoclinic

Birefringence

0.0500.014-0.016
0 0.296
👆🏻

Clarity

Translucent
TransparentUlrich Henn and Claudio C. Milisenda

Astrophyllite and Hiddenite Optic Character

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

Astrophyllite and Hiddenite Transparency

Similar to their colors, Astrophyllite and Hiddenite 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, Astrophyllite is Translucent while Astrophyllite is Translucent in appearance.