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Pyromorphite
Pyromorphite

Spinel
Spinel



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Pyromorphite
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Spinel

Pyromorphite and Spinel Optical Properties

Optical Properties

Luster

Resinous, Subadamantine
Vitreous

Pleochroism

Weak
Absent

Dispersion

0.030.02
0.005 1
👆🏻

Transparency

Transparent
Transparent, Translucent, Transparent to translucent

Refractive Index

2.042-2.0591.73
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Hexagonal
Isometric

Birefringence

0.010-9999
0 0.296
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Clarity

Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Pyromorphite and Spinel Optic Character

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

Similar to their colors, Pyromorphite and Spinel 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.