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Unakite
Unakite

Prehnite
Prehnite



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Unakite
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Prehnite

Unakite and Prehnite Optical Properties

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1 Optical Properties
1.1 Luster
Not Available
Vitreous
1.2 Pleochroism
Not Available
AbsentWalter Schumann
1.3 Dispersion
NANone
Fluorite Optical Properties
0.007 1
1.4 Transparency
Gemstones of the world (2001)
Translucent
1.5 Refractive Index
1.5251.611-1.673
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
monoclinic
Orthorhombic
1.8 Birefringence
Not Available0.021-0.033
Achroite
0 0.296
1.9 Clarity
Gemstones of the world (2001)
TranslucentHerve Nicolas Lazzarelli

Unakite and Prehnite Optic Character

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

Similar to their colors, Unakite and Prehnite 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.