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Augelite
Augelite

Astrophyllite
Astrophyllite



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Augelite
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Astrophyllite

Augelite and Astrophyllite Optical Properties

1 Optical Properties
1.1 Luster
Pearly
Greasy, Pearly
1.2 Pleochroism
NilArthur Thomas
Strong: X= deep red-orange Y= orange-yellow Z= lemon-yellow
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Gemmological Tables (2004) More from other references
Translucent
1.5 Refractive Index
1.570-1.5911.678-1.758
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Triclinic
1.8 Birefringence
0.020-0.0210.050
Achroite
0 0.296
1.9 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Translucent

Augelite and Astrophyllite Optic Character

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

Augelite and Astrophyllite Transparency

Similar to their colors, Augelite and Astrophyllite 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, Augelite is Gemmological Tables (2004) More from other references while Augelite is Gemmological Tables (2004) More from other references in appearance.