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Pyromorphite
Pyromorphite

Siderite
Siderite



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Pyromorphite
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Siderite

Pyromorphite and Siderite Optical Properties

Optical Properties

Luster

Resinous, Subadamantine
Pearly

Pleochroism

Weak
-

Dispersion

0.030.04
0.005 1
👆🏻

Transparency

Transparent
Transparent, Translucent

Refractive Index

2.042-2.0591.633-1.875
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Hexagonal
Trigonal

Birefringence

0.0100.242
0 0.296
👆🏻

Clarity

Transparent
Transparent

Pyromorphite and Siderite Optic Character

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

Similar to their colors, Pyromorphite and Siderite 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.