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Smithsonite
Smithsonite

Cobaltite
Cobaltite



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Smithsonite
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Cobaltite

Smithsonite and Cobaltite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Pearly
Not Available
1.2 Pleochroism
AbsentWalter Schumann
Very weak
1.3 Dispersion
Albite Optical ..
0.01
Rank: 26 (Overall)
Not Available
Rank: N/A (Overall)
Fluorite Optical Properties
1.4 Transparency
Translucent
Gems
1.5 Refractive Index
1.620-1.850
Not Available
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Trigonal
Orthorhombic Pyramidal H-M Symbol (mm2) Space Group: P ca21
1.8 Birefringence
0.223-0.227
Not Available
1.9 Clarity
Translucent
Gems

Smithsonite and Cobaltite Optic Character

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

Smithsonite and Cobaltite Transparency

Similar to their colors, Smithsonite and Cobaltite 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, Smithsonite is Translucent while Smithsonite is Translucent in appearance.