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Blue John
Blue John

Scheelite
Scheelite



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Blue John
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Scheelite

Blue John and Scheelite Optical Properties

Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
-
-
0.02
Transparent
1.432-1.436
-
-
-9999
Transparent
 
Vitreous, Adamantine
Definite dichoric in yellow (yellow to orange-brown)
0.04
Translucent, Transparent
1.918-1.936
-
tetragonal
0.016
Translucent

Blue John and Scheelite Optic Character

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

Blue John and Scheelite Transparency

Similar to their colors, Blue John and Scheelite 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, Blue John is while Blue John is in appearance.