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Amazonite
Amazonite

Purpurite
Purpurite



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Amazonite
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Purpurite

Amazonite and Purpurite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Not Available
1.2 Pleochroism
WeakMichael O’Donoghue
StrongArthur Thomas
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent, Translucent to opaque
TranslucentWalter Schumann, Gemstones of the world (2001) More from other references
1.5 Refractive Index
1.522-1.5301.85-1.92
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Triclinic
Orthorhombic
1.8 Birefringence
0.008-0.0100.070
Achroite
0 0.296
1.9 Clarity
Translucent
TranslucentWalter Schumann

Amazonite and Purpurite Optic Character

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

Similar to their colors, Amazonite and Purpurite 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.