×

Sphalerite
Sphalerite

Mellite
Mellite



ADD
Compare
X
Sphalerite
X
Mellite

Sphalerite and Mellite Optical Properties

1 Optical Properties
1.1 Luster
Adamantine
Vitreous
1.2 Pleochroism
AbsentWalter Schumann
Weak: yellowish brown yellowAnthony et al
1.3 Dispersion
0.16NA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Translucent
Gemmological Tables (2004) More from other references
1.5 Refractive Index
2.368-2.3711.509-1.541
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Isometric
Not Available
1.8 Birefringence
Not Available0.030
Achroite
0 0.296
1.9 Clarity
Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Sphalerite and Mellite Optic Character

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

Sphalerite and Mellite Transparency

Similar to their colors, Sphalerite and Mellite 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, Sphalerite is Translucent and Transparent while Sphalerite is Translucent and Transparent in appearance.