×

Pezzottaite
Pezzottaite

Thulite
Thulite



ADD
Compare
X
Pezzottaite
X
Thulite

Pezzottaite and Thulite Optical Properties

Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

Moderate dichroic
Present

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

Transparent
Opaque, Translucent, Opaque . May be translucent in thin backlit sections.

Refractive Index

1.598-1.6201.695
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Hexagonal
Orthorhombic

Birefringence

0.008-0.0110.006-0.018
0 0.296
👆🏻

Clarity

Transparent
OpaqueHerve Nicolas Lazzarelli

Pezzottaite and Thulite Optic Character

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

Pezzottaite and Thulite Transparency

Similar to their colors, Pezzottaite and Thulite 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, Pezzottaite is Transparent while Pezzottaite is Transparent in appearance.