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Afghanite
Afghanite

Poldervaartite
Poldervaartite



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Afghanite
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Poldervaartite

Afghanite and Poldervaartite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Vitreous
1.2 Pleochroism
Not Available
Weak: colorless light gray bluish grayAnthony et al
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Gemstones (2009)
Transparent
1.5 Refractive Index
1.5231.634-1.656
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Trigonal
Not Available
1.8 Birefringence
0.006Not Available
Achroite
0 0.296
1.9 Clarity
Transparent
Transparent

Afghanite and Poldervaartite Optic Character

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

Afghanite and Poldervaartite Transparency

Similar to their colors, Afghanite and Poldervaartite 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, Afghanite is Gemstones (2009) and Transparent while Afghanite is Gemstones (2009) and Transparent in appearance.