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Coral
Coral

Riebeckite
Riebeckite



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Coral
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Riebeckite

Coral and Riebeckite Optical Properties

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1 Optical Properties
1.1 Luster
Not Available
Vitreous, Silky
1.2 Pleochroism
AbsentWalter Schumann
X = blue
1.3 Dispersion
NoneNA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent
Not Available
1.5 Refractive Index
1.486-1.6581.680-1.698
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Trigonal
monoclinic
1.8 Birefringence
0.160-0.1720.005-0.008
Achroite
0 0.296
1.9 Clarity
Translucent
Not Available

Coral and Riebeckite Optic Character

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

Coral and Riebeckite Transparency

Similar to their colors, Coral and Riebeckite 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.