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Anthophyllite
Anthophyllite

Apophyllite
Apophyllite



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Anthophyllite
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Apophyllite

Anthophyllite and Apophyllite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Pearly
Vitreous, Pearly
1.2 Pleochroism
When Fe-rich
Dichroic (colorless)
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent
Transparent, Translucent
1.5 Refractive Index
1.603-1.6901.530-1.543
Agate Opal
1 3.25
1.6 Optic Character
Biaxial/+
Uniaxial/-
1.7 Crystal System
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
tetragonal
1.8 Birefringence
Not Available0.000-0.003
Achroite
0 0.296
1.9 Clarity
Transparent
Transparent

Anthophyllite and Apophyllite Optic Character

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

Anthophyllite and Apophyllite Transparency

Similar to their colors, Anthophyllite and Apophyllite 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.