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Coral and Heliotrope Optical Properties


Heliotrope and Coral Optical Properties


Optical Properties

Luster
Not Available   
Vitreous   

Pleochroism
AbsentWalter Schumann   
Not Available   

Dispersion
None   
Not Available   

Transparency
Translucent   
Not Available   

Refractive Index
1.486-1.658   
1.53-1.54   

Optic Character
Not Available   
Not Available   

Crystal System
Trigonal   
Trigonal   

Birefringence
0.160-0.172   
0.004   

Clarity
Translucent   
Not Available   

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<< Physical Properties

Coral and Heliotrope Optic Character

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

Similar to their colors, Coral and Heliotrope 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, Coral is Translucent while Coral is Translucent in appearance.

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