×

Melanite
Melanite

Proustite
Proustite



ADD
Compare
X
Melanite
X
Proustite

Melanite and Proustite Optical Properties

Optical Properties

Luster

Subadamantine, Vitreous
Adamantine

Pleochroism

-
Moderate; cochineal-red to blood-red

Dispersion

0.060.03
0.005 1
👆🏻

Transparency

Translucent
OpaqueUlrich Henn and Claudio C. Milisenda

Refractive Index

1.855-1.8952.792-3.087
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
Trigonal

Birefringence

-99990.295-0.296
0 0.296
👆🏻

Clarity

Translucent
OpaqueUlrich Henn and Claudio C. Milisenda

Melanite and Proustite Optic Character

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

Melanite and Proustite Transparency

Similar to their colors, Melanite and Proustite 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, Melanite is Translucent while Melanite is Translucent in appearance.