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Hiddenite
Hiddenite

Astrophyllite
Astrophyllite



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Hiddenite
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Astrophyllite

Hiddenite and Astrophyllite Optical Properties

Optical Properties

Luster

Vitreous
Greasy, Pearly

Pleochroism

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

Dispersion

0.020.12
0.005 1
👆🏻

Transparency

Transparent
Translucent

Refractive Index

1.657-1.6811.678-1.758
1 3.25
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Optic Character

-
-

Crystal System

monoclinic
Triclinic

Birefringence

0.014-0.0160.050
0 0.296
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Clarity

TransparentUlrich Henn and Claudio C. Milisenda
Translucent

Hiddenite and Astrophyllite Optic Character

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

Similar to their colors, Hiddenite and Astrophyllite 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.