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Coral
Coral

Amethyst
Amethyst



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Coral
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Amethyst

Coral and Amethyst Optical Properties

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1 Optical Properties
1.1 Luster
Not Available
Vitreous
1.2 Pleochroism
AbsentWalter Schumann
None
1.3 Dispersion
Albite Optical ..
None
Rank: N/A (Overall)
0.01
Rank: 27 (Overall)
Fluorite Optical Properties
1.4 Transparency
Translucent
Transparent, Transparent to translucent
1.5 Refractive Index
1.486-1.658
1.544-1.553
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Trigonal
Trigonal
1.8 Birefringence
0.160-0.172
0.009
1.9 Clarity
Translucent
Transparent

Coral and Amethyst Optic Character

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

Similar to their colors, Coral and Amethyst 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.