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Omphacite
Omphacite

Zincite
Zincite



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Omphacite
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Zincite

Omphacite and Zincite Optical Properties

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1 Optical Properties
1.1 Luster
Vitreous
Subadamantine, Resinous
1.2 Pleochroism
Weak: colorless -- very pale green -- very pale green
Very weak
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
TranslucentAnthony et al, Handbook of mineralogy (2001)
TransparentRobert C. Kammerling, The Journal of Gemmology (1995) More from other references
1.5 Refractive Index
1.662-1.7232.013-2.029
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
Hexagonal
1.8 Birefringence
Not Available0.016
Achroite
0 0.296
1.9 Clarity
TranslucentAnthony et al
TransparentRobert C. Kammerling

Omphacite and Zincite Optic Character

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

Omphacite and Zincite Transparency

Similar to their colors, Omphacite and Zincite 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, Omphacite is Handbook of mineralogy (2001) and TranslucentAnthony et al while Omphacite is Handbook of mineralogy (2001) and TranslucentAnthony et al in appearance.