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Anthophyllite
Anthophyllite

Grossular
Grossular



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Anthophyllite
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Grossular

Anthophyllite and Grossular Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Pearly
Greasy, Vitreous
1.2 Pleochroism
When Fe-rich
None
1.3 Dispersion
NA0.02
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.603-1.6901.730-1.760
Agate Opal
1 3.25
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
cubic
1.8 Birefringence
Not Available0.020
Achroite
0 0.296
1.9 Clarity
Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Anthophyllite and Grossular Optic Character

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

Similar to their colors, Anthophyllite and Grossular 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.