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Dallasite
Dallasite

Andesine
Andesine



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Dallasite
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Andesine

Dallasite and Andesine Optical Properties

1 Optical Properties
1.1 Luster
Not Available
Vitreous
1.2 Pleochroism
Not Available
colorless.
1.5 Dispersion
NA0.70
Fluorite Optical Properties
0.007 1
2.5 Transparency
Not Available
Transparent, Translucent, Transparent to translucent
2.6 Refractive Index
1.5401.543-1.564
Agate Opal
1 3.25
2.10 Optic Character
Not Available
Biaxial/+
2.11 Crystal System
Not Available
Triclinic
2.12 Birefringence
0.008-0.0100.007-0.011
Achroite
0 0.296
3.4 Clarity
Not Available
Transparent

Dallasite and Andesine Optic Character

Dallasite and Andesine optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Dallasite and Andesine 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 Dallasite and Andesine 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. Andesine has Biaxial/+ character.

Dallasite and Andesine Transparency

Similar to their colors, Dallasite and Andesine 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, Dallasite is Not Available while Dallasite is Not Available in appearance.