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Sugilite
Sugilite

Adularia
Adularia



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Sugilite
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Adularia

Sugilite and Adularia Optical Properties

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1 Optical Properties
1.1 Luster
Vitreous
Not Available
1.2 Pleochroism
Weak
Not Available
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent
TransparentArthur Thomas, Gemstones (2009)
1.5 Refractive Index
1.607-1.6121.518-1.536
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Hexagonal
Not Available
1.8 Birefringence
0.0030.005-0.008
Achroite
0 0.296
1.9 Clarity
Translucent
TransparentArthur Thomas

Sugilite and Adularia Optic Character

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

Sugilite and Adularia Transparency

Similar to their colors, Sugilite 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, Sugilite is Translucent while Sugilite is Translucent in appearance.