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Scheelite and Star Sapphire Optical Properties


Star Sapphire and Scheelite Optical Properties


Optical Properties

Luster
Vitreous, Adamantine   
Not Available   

Pleochroism
Definite dichoric in yellow (yellow to orange-brown)   
Not Available   

Dispersion
0.04   
12
Not Available   

Transparency
Translucent, Transparent   
Transparent, Translucent   

Refractive Index
1.918-1.936   
1.758-1.780   

Optic Character
Not Available   
Not Available   

Crystal System
tetragonal   
Not Available   

Birefringence
0.016   
0.007-0.010   

Clarity
Translucent   
Transparent   

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Scheelite and Star Sapphire Optic Character

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

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Scheelite and Star Sapphire Transparency

Similar to their colors, Scheelite and Star Sapphire 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.

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