×

Mellite
Mellite

Eudialyte
Eudialyte



ADD
Compare
X
Mellite
X
Eudialyte

Mellite and Eudialyte Optical Properties

Add ⊕

Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

Weak: yellowish brown yellowAnthony et al
Weak: O= colorless

Dispersion

0.010.01
0.005 1
👆🏻

Transparency

-
Translucent

Refractive Index

1.509-1.5411.591-1.633
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
Trigonal

Birefringence

0.0300.003-0.010
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
Translucent

Mellite and Eudialyte Optic Character

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

Mellite and Eudialyte Transparency

Similar to their colors, Mellite and Eudialyte 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, Mellite is while Mellite is in appearance.