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Corundum
Corundum

Adularia
Adularia



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Corundum
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Adularia

Corundum and Adularia Optical Properties

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1 Optical Properties
1.1 Luster
Adamantine, Vitreous
Not Available
1.2 Pleochroism
None
Not Available
1.3 Dispersion
0.02NA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Translucent
TransparentArthur Thomas, Gemstones (2009)
1.5 Refractive Index
1.758-1.7801.518-1.536
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Trigonal
Not Available
1.8 Birefringence
0.007-0.0100.005-0.008
Achroite
0 0.296
1.9 Clarity
Gemmological Tables (2004) More from other references
TransparentArthur Thomas

Corundum and Adularia Optic Character

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

Corundum and Adularia Transparency

Similar to their colors, Corundum 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, Corundum is Translucent and Transparent while Corundum is Translucent and Transparent in appearance.