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Pyromorphite
Pyromorphite

Astrophyllite
Astrophyllite



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Pyromorphite
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Astrophyllite

Pyromorphite and Astrophyllite Optical Properties

Optical Properties

Luster

Resinous, Subadamantine
Greasy, Pearly

Pleochroism

Weak
Strong: X= deep red-orange Y= orange-yellow Z= lemon-yellow

Dispersion

0.030.12
0.005 1
👆🏻

Transparency

Transparent
Translucent

Refractive Index

2.042-2.0591.678-1.758
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Hexagonal
Triclinic

Birefringence

0.0100.050
0 0.296
👆🏻

Clarity

Transparent
Translucent

Pyromorphite and Astrophyllite Optic Character

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

Pyromorphite and Astrophyllite Transparency

Similar to their colors, Pyromorphite 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, Pyromorphite is Transparent while Pyromorphite is Transparent in appearance.