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Grossular Garnet and Blue John Optical Properties


Blue John and Grossular Garnet Optical Properties


Optical Properties

Luster
Vitreous, Adamantine   
Not Available   

Pleochroism
Not Available   
Not Available   

Dispersion
Not Available   
Not Available   

Transparency
Transparent   
Transparent   

Refractive Index
1.738-1.745   
1.432-1.436   

Optic Character
Not Available   
Not Available   

Crystal System
Isometric   
Not Available   

Birefringence
Not Available   
Not Available   

Clarity
Transparent   
Transparent   

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Grossular Garnet and Blue John Optic Character

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

Similar to their colors, Grossular Garnet and Blue John 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, Grossular Garnet is Transparent while Grossular Garnet is Transparent in appearance.

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