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Axinite
Axinite

Melanite
Melanite



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Axinite
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Melanite

Axinite and Melanite Optical Properties

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1 Optical Properties
1.1 Luster
Vitreous
Subadamantine, Vitreous
1.2 Pleochroism
Strong
Not Available
1.3 Dispersion
0.020.06
Fluorite Optical Properties
0.007 1
1.4 Transparency
Gemmological Tables (2004) More from other references
Translucent
1.5 Refractive Index
1.656-1.7041.855-1.895
Agate Opal
1 3.25
1.6 Optic Character
Biaxial/+
Not Available
1.7 Crystal System
Triclinic
Not Available
1.8 Birefringence
0.009-0.012Not Available
Achroite
0 0.296
1.9 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Translucent

Axinite and Melanite Optic Character

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

Axinite and Melanite Transparency

Similar to their colors, Axinite and Melanite 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, Axinite is Gemmological Tables (2004) More from other references while Axinite is Gemmological Tables (2004) More from other references in appearance.