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Prasiolite
Prasiolite

Unakite
Unakite



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Prasiolite
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Unakite

Prasiolite and Unakite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Not Available
1.2 Pleochroism
Very weak: light green pale greenWalter Schumann
Not Available
1.3 Dispersion
Albite Optical ..
0.01
Rank: 27 (Overall)
Not Available
Rank: N/A (Overall)
Fluorite Optical Properties
1.4 Transparency
Transparent, Translucent
Gemstones of the world (2001)
1.5 Refractive Index
1.544-1.553
1.525
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Trigonal
monoclinic
1.8 Birefringence
0.009
Not Available
1.9 Clarity
Transparent
Gemstones of the world (2001)

Prasiolite and Unakite Optic Character

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

Prasiolite and Unakite Transparency

Similar to their colors, Prasiolite and Unakite 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, Prasiolite is Translucent and Transparent while Prasiolite is Translucent and Transparent in appearance.