Home
Gemstones


Piemontite and Powellite Optical Properties


Powellite and Piemontite Optical Properties


Optical Properties

Luster
Vitreous   
Greasy, Subadamantine   

Pleochroism
visible   
In deeply colored specimens: blue greenAnthony et al   

Dispersion
Not Available   
Not Available   

Transparency
Not Available   
Transparent   

Refractive Index
1.725-1.756   
1.974-1.984   

Optic Character
Not Available   
Not Available   

Crystal System
monoclinic   
Not Available   

Birefringence
0.025-0.076   
Not Available   

Clarity
Not Available   
Transparent   

Benefits >>
<< Physical Properties

Piemontite and Powellite Optic Character

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

Compare Red Gemstones

Piemontite and Powellite Transparency

Similar to their colors, Piemontite and Powellite 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 Not Available while Piemontite is Not Available in appearance.

Red Gemstones

Red Gemstones


Compare Red Gemstones