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Scheelite
Scheelite

Purpurite
Purpurite



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Scheelite
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Purpurite

Scheelite and Purpurite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Adamantine
Not Available
1.2 Pleochroism
Definite dichoric in yellow (yellow to orange-brown)
StrongArthur Thomas
1.3 Dispersion
Albite Optical ..
0.04
Rank: 12 (Overall)
Not Available
Rank: N/A (Overall)
Fluorite Optical Properties
1.4 Transparency
Translucent, Transparent
TranslucentWalter Schumann, Gemstones of the world (2001) More from other references
1.5 Refractive Index
1.918-1.936
1.85-1.92
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
tetragonal
Orthorhombic
1.8 Birefringence
0.016
0.070
1.9 Clarity
Translucent
TranslucentWalter Schumann

Scheelite and Purpurite Optic Character

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

Scheelite and Purpurite Transparency

Similar to their colors, Scheelite 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, Scheelite is Translucent and Transparent while Scheelite is Translucent and Transparent in appearance.