×

Dumortierite
Dumortierite

Pyrope
Pyrope



ADD
Compare
X
Dumortierite
X
Pyrope

Dumortierite and Pyrope Optical Properties

Optical Properties

Luster

Vitreous
Greasy, Vitreous

Pleochroism

Strong; X = deep blue or violet; Y = yellow to red-violet or nearly colorless; Z = colorless or very pale blue
None

Dispersion

0.010.02
0.005 1
👆🏻

Transparency

Translucent, Translucent to opaque
-

Refractive Index

1.669-1.7231.720-1.756
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
cubic

Birefringence

0.011-0.037-9999
0 0.296
👆🏻

Clarity

Translucent
TransparentUlrich Henn and Claudio C. Milisenda

Dumortierite and Pyrope Optic Character

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

Dumortierite and Pyrope Transparency

Similar to their colors, Dumortierite and Pyrope 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, Dumortierite is Translucent and Translucent to opaque while Dumortierite is Translucent and Translucent to opaque in appearance.