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Anthophyllite
Anthophyllite

Cobaltite
Cobaltite



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Anthophyllite
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Cobaltite

Anthophyllite and Cobaltite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Pearly
Not Available
1.2 Pleochroism
When Fe-rich
Very weak
1.3 Dispersion
Albite Optical ..
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Fluorite Optical Properties
1.4 Transparency
Transparent
Gems
1.5 Refractive Index
1.603-1.690
Not Available
1.6 Optic Character
Biaxial/+
Not Available
1.7 Crystal System
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
Orthorhombic Pyramidal H-M Symbol (mm2) Space Group: P ca21
1.8 Birefringence
Not Available
Not Available
1.9 Clarity
Transparent
Gems

Anthophyllite and Cobaltite Optic Character

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

Anthophyllite and Cobaltite Transparency

Similar to their colors, Anthophyllite 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, Anthophyllite is Transparent while Anthophyllite is Transparent in appearance.

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