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Coral
Coral

Adularia
Adularia



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Coral
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Adularia

Coral and Adularia Optical Properties

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1 Optical Properties
1.1 Luster
Not Available
Not Available
1.2 Pleochroism
AbsentWalter Schumann
Not Available
1.3 Dispersion
NoneNA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent
TransparentArthur Thomas, Gemstones (2009)
1.5 Refractive Index
1.486-1.6581.518-1.536
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Trigonal
Not Available
1.8 Birefringence
0.160-0.1720.005-0.008
Achroite
0 0.296
1.9 Clarity
Translucent
TransparentArthur Thomas

Coral and Adularia Optic Character

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

Similar to their colors, Coral and Adularia 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.