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Piemontite
Piemontite

Cavansite
Cavansite



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Piemontite
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Cavansite

Piemontite and Cavansite Optical Properties

Optical Properties

Luster

Vitreous
Vitreous, Pearly

Pleochroism

visible
Visible: X=Z= colorless Y= blue

Dispersion

0.020.04
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.725-1.7561.542
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
Orthorhombic

Birefringence

0.025-0.0760.009
0 0.296
👆🏻

Clarity

-
-

Piemontite and Cavansite Optic Character

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

Piemontite and Cavansite Transparency

Similar to their colors, Piemontite and Cavansite 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, Piemontite is while Piemontite is in appearance.