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Adularia
Adularia

Dallasite
Dallasite



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Adularia
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Dallasite

Adularia and Dallasite Optical Properties

1 Optical Properties
1.1 Luster
Not Available
Not Available
1.2 Pleochroism
Not Available
Not Available
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
TransparentArthur Thomas, Gemstones (2009)
Not Available
1.5 Refractive Index
1.518-1.5361.540
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
Not Available
1.8 Birefringence
0.005-0.0080.008-0.010
Achroite
0 0.296
1.9 Clarity
TransparentArthur Thomas
Not Available

Adularia and Dallasite Optic Character

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

Adularia and Dallasite Transparency

Similar to their colors, Adularia and Dallasite 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, Adularia is Gemstones (2009) and TransparentArthur Thomas while Adularia is Gemstones (2009) and TransparentArthur Thomas in appearance.