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Melanite
Melanite

Poudretteite
Poudretteite



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Melanite
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Poudretteite

Melanite and Poudretteite Optical Properties

1 Optical Properties
1.1 Luster
Subadamantine, Vitreous
Vitreous
1.2 Pleochroism
Not Available
Colorless
1.3 Dispersion
0.06NA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.855-1.8951.511-1.532
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
Hexagonal
1.8 Birefringence
Not Available0.021
Achroite
0 0.296
1.9 Clarity
Translucent
TransparentUlrich Henn and Claudio C. Milisenda

Melanite and Poudretteite Optic Character

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

Similar to their colors, Melanite and Poudretteite 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.