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Purpurite
Purpurite

Fayalite
Fayalite



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Purpurite
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Fayalite

Purpurite and Fayalite Optical Properties

1 Optical Properties
1.1 Luster
Not Available
Vitreous, Resinous
1.2 Pleochroism
StrongArthur Thomas
Faint
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
TranslucentWalter Schumann, Gemstones of the world (2001) More from other references
TransparentAnthony et al, Handbook of mineralogy (2001)
1.5 Refractive Index
1.85-1.921.827-1.879
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic
Orthorhombic
1.8 Birefringence
0.0700.042-0.051
Achroite
0 0.296
1.9 Clarity
TranslucentWalter Schumann
TransparentAnthony et al

Purpurite and Fayalite Optic Character

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

Purpurite and Fayalite Transparency

Similar to their colors, Purpurite and Fayalite 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, Purpurite is Gemstones of the world (2001) More from other references and TranslucentWalter Schumann while Purpurite is Gemstones of the world (2001) More from other references and TranslucentWalter Schumann in appearance.