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Melanite
Melanite

Amblygonite
Amblygonite



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Melanite
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Amblygonite

Melanite and Amblygonite Optical Properties

1 Optical Properties
1.1 Luster
Subadamantine, Vitreous
Vitreous, Pearly
1.2 Pleochroism
Not Available
weak to none
1.3 Dispersion
0.060.01
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.855-1.8951.578-1.646
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Biaxial/+
1.7 Crystal System
Not Available
Triclinic
1.8 Birefringence
Not Available0.020-0.030
Achroite
0 0.296
1.9 Clarity
Translucent
TransparentUlrich Henn and Claudio C. Milisenda

Melanite and Amblygonite Optic Character

Melanite and Amblygonite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Melanite and Amblygonite 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 Amblygonite 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. Amblygonite has Biaxial/+ character.

Melanite and Amblygonite Transparency

Similar to their colors, Melanite and Amblygonite 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.