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Amethyst
Amethyst

Pyromorphite
Pyromorphite



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Amethyst
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Pyromorphite

Amethyst and Pyromorphite Optical Properties

Optical Properties

Luster

Vitreous
Resinous, Subadamantine

Pleochroism

None
Weak

Dispersion

0.010.03
0.005 1
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Transparency

Transparent, Transparent to translucent
Transparent

Refractive Index

1.544-1.5532.042-2.059
1 3.25
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Optic Character

-
-

Crystal System

Trigonal
Hexagonal

Birefringence

0.0090.010
0 0.296
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Clarity

Transparent
Transparent

Amethyst and Pyromorphite Optic Character

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

Amethyst and Pyromorphite Transparency

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