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Anthophyllite
Anthophyllite

Dioptase
Dioptase



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Anthophyllite
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Dioptase

Anthophyllite and Dioptase Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Pearly
Vitreous
1.2 Pleochroism
When Fe-rich
Weak; dark emerald green
1.3 Dispersion
Albite Optical ..
Not Available
Rank: N/A (Overall)
0.04
Rank: 13 (Overall)
Fluorite Optical Properties
1.4 Transparency
Transparent
TranslucentHerve Nicolas Lazzarelli
1.5 Refractive Index
1.603-1.690
1.644-1.720
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 Available
0.051-0.053
1.9 Clarity
Transparent
TranslucentHerve Nicolas Lazzarelli

Anthophyllite and Dioptase Optic Character

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

Similar to their colors, Anthophyllite and Dioptase 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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