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Cobaltite
Cobaltite

Dioptase
Dioptase



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Cobaltite
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Dioptase

Cobaltite and Dioptase Optical Properties

1 Optical Properties
1.1 Luster
Not Available
Vitreous
1.2 Pleochroism
Very weak
Weak; dark emerald green
1.3 Dispersion
NA0.04
Fluorite Optical Properties
0.007 1
1.4 Transparency
Gems
TranslucentHerve Nicolas Lazzarelli
1.5 Refractive Index
Not Available1.644-1.720
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic Pyramidal H-M Symbol (mm2) Space Group: P ca21
Trigonal
1.8 Birefringence
Not Available0.051-0.053
Achroite
0 0.296
1.9 Clarity
Gems
TranslucentHerve Nicolas Lazzarelli

Cobaltite and Dioptase Optic Character

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

Cobaltite and Dioptase Transparency

Similar to their colors, Cobaltite and Dioptase 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, Cobaltite is Gems while Cobaltite is Gems in appearance.