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Amazonite
Amazonite

Colemanite
Colemanite



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Amazonite
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Colemanite

Amazonite and Colemanite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Vitreous
1.2 Pleochroism
WeakMichael O’Donoghue
NilArthur Thomas
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent, Translucent to opaque
Transparent
1.5 Refractive Index
1.522-1.5301.584-1.615
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Triclinic
Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/a
1.8 Birefringence
0.008-0.0100.028-0.030
Achroite
0 0.296
1.9 Clarity
Translucent
Transparent

Amazonite and Colemanite Optic Character

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

Amazonite and Colemanite Transparency

Similar to their colors, Amazonite and Colemanite 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, Amazonite is Translucent and Translucent to opaque while Amazonite is Translucent and Translucent to opaque in appearance.