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Ammolite
Ammolite

Astrophyllite
Astrophyllite



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Ammolite
X
Astrophyllite

Ammolite and Astrophyllite Optical Properties

Optical Properties

Luster

Silky, Vitreous
Greasy, Pearly

Pleochroism

None
Strong: X= deep red-orange Y= orange-yellow Z= lemon-yellow

Dispersion

0.010.12
0.005 1
👆🏻

Transparency

-
Translucent

Refractive Index

1.520-1.6701.678-1.758
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Trigonal
Triclinic

Birefringence

0.135-0.1450.050
0 0.296
👆🏻

Clarity

-
Translucent

Ammolite and Astrophyllite Optic Character

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

Ammolite and Astrophyllite Transparency

Similar to their colors, Ammolite 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, Ammolite is while Ammolite is in appearance.