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Unakite
Unakite

Poudretteite
Poudretteite



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Unakite
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Poudretteite

Unakite and Poudretteite Optical Properties

1 Optical Properties
1.1 Luster
Not Available
Vitreous
1.2 Pleochroism
Not Available
Colorless
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Gemstones of the world (2001)
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.5251.511-1.532
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
monoclinic
Hexagonal
1.8 Birefringence
Not Available0.021
Achroite
0 0.296
1.9 Clarity
Gemstones of the world (2001)
TransparentUlrich Henn and Claudio C. Milisenda

Unakite and Poudretteite Optic Character

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

Unakite and Poudretteite Transparency

Similar to their colors, Unakite and Poudretteite 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, Unakite is Gemstones of the world (2001) while Unakite is Gemstones of the world (2001) in appearance.