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Hollandite
Hollandite

Afghanite
Afghanite



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Hollandite
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Afghanite

Hollandite and Afghanite Optical Properties

1 Optical Properties
1.1 Luster
Not Available
Vitreous
1.2 Pleochroism
Weak.
Not Available
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Not Available
Transparent, Gemstones (2009)
1.5 Refractive Index
Not Available1.523
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
monoclinic
Trigonal
1.8 Birefringence
Not Available0.006
Achroite
0 0.296
1.9 Clarity
Not Available
Transparent

Hollandite and Afghanite Optic Character

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

Hollandite and Afghanite Transparency

Similar to their colors, Hollandite and Afghanite 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, Hollandite is Not Available while Hollandite is Not Available in appearance.