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Anthophyllite
Anthophyllite

Amethyst
Amethyst



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Anthophyllite
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Amethyst

Anthophyllite and Amethyst Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Pearly
Vitreous
1.2 Pleochroism
When Fe-rich
None
1.3 Dispersion
NA0.01
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent
Transparent, Transparent to translucent
1.5 Refractive Index
1.603-1.6901.544-1.553
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
Trigonal
1.8 Birefringence
Not Available0.009
Achroite
0 0.296
1.9 Clarity
Transparent
Transparent

Anthophyllite and Amethyst Optic Character

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

Similar to their colors, Anthophyllite and Amethyst 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.