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Liddicoatite
Liddicoatite

Purpurite
Purpurite



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Liddicoatite
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Purpurite

Liddicoatite and Purpurite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Not Available
1.2 Pleochroism
Strong: dark brown light brownAnthony et al
StrongArthur Thomas
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent
TranslucentWalter Schumann, Gemstones of the world (2001) More from other references
1.5 Refractive Index
Not Available1.85-1.92
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
Orthorhombic
1.8 Birefringence
Not Available0.070
Achroite
0 0.296
1.9 Clarity
Transparent
TranslucentWalter Schumann

Liddicoatite and Purpurite Optic Character

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

Liddicoatite and Purpurite Transparency

Similar to their colors, Liddicoatite 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, Liddicoatite is Transparent while Liddicoatite is Transparent in appearance.