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Amethyst
Amethyst

Adularia
Adularia



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Amethyst
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Adularia

Amethyst and Adularia Optical Properties

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1 Optical Properties
1.1 Luster
Vitreous
Not Available
1.2 Pleochroism
None
Not Available
1.3 Dispersion
0.01NA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Transparent to translucent
TransparentArthur Thomas, Gemstones (2009)
1.5 Refractive Index
1.544-1.5531.518-1.536
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Trigonal
Not Available
1.8 Birefringence
0.0090.005-0.008
Achroite
0 0.296
1.9 Clarity
Transparent
TransparentArthur Thomas

Amethyst and Adularia Optic Character

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

Amethyst and Adularia Transparency

Similar to their colors, Amethyst 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, Amethyst is Transparent and Transparent to translucent while Amethyst is Transparent and Transparent to translucent in appearance.