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Cordierite
Cordierite

Augelite
Augelite



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Cordierite
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Augelite

Cordierite and Augelite Optical Properties

1 Optical Properties
1.1 Luster
Greasy, Vitreous
Pearly
1.2 Pleochroism
X = pale yellow
NilArthur Thomas
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Not Available
Gemmological Tables (2004) More from other references
1.5 Refractive Index
Not Available1.570-1.591
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic
1.8 Birefringence
Not Available0.020-0.021
Achroite
0 0.296
1.9 Clarity
Not Available
TransparentUlrich Henn and Claudio C. Milisenda

Cordierite and Augelite Optic Character

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

Cordierite and Augelite Transparency

Similar to their colors, Cordierite and Augelite 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, Cordierite is Not Available while Cordierite is Not Available in appearance.