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Smithsonite
Smithsonite

Anthophyllite
Anthophyllite



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Smithsonite
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Anthophyllite

Smithsonite and Anthophyllite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Pearly
Vitreous, Pearly
1.2 Pleochroism
AbsentWalter Schumann
When Fe-rich
1.3 Dispersion
0.01NA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent
Transparent
1.5 Refractive Index
1.620-1.8501.603-1.690
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Biaxial/+
1.7 Crystal System
Trigonal
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
1.8 Birefringence
0.223-0.227Not Available
Achroite
0 0.296
1.9 Clarity
Translucent
Transparent

Smithsonite and Anthophyllite Optic Character

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

Smithsonite and Anthophyllite Transparency

Similar to their colors, Smithsonite and Anthophyllite 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.